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perigon
an angle of 360 degrees
perigon: an angle of 360 degrees
cutting_angle
the angle between the face of a cutting tool and the surface of the work
cutting_angle: the angle between the face of a cutting tool and the surface of the work
dip
(physics) the angle that a magnetic needle makes with the plane of the horizon
dip: (physics) the angle that a magnetic needle makes with the plane of the horizon
lead
the angle between the direction a gun is aimed and the position of a moving target (correcting for the flight time of the missile)
lead: the angle between the direction a gun is aimed and the position of a moving target (correcting for the flight time of the missile)
magnetic_declination
the angle (at a particular location) between magnetic north and true north
magnetic_declination: the angle (at a particular location) between magnetic north and true north
azimuth
the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
azimuth: the azimuth of a celestial body is the angle between the vertical plane containing it and the plane of the meridian
bowl
a concave shape with an open top
bowl: a concave shape with an open top
groove
a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
groove: a long narrow furrow cut either by a natural process (such as erosion) or by a tool (as e.g. a groove in a phonograph record)
rut
a groove or furrow (especially one in soft earth caused by wheels)
rut: a groove or furrow (especially one in soft earth caused by wheels)
scoop
a hollow concave shape made by removing something
scoop: a hollow concave shape made by removing something
bulge
something that bulges out or is protuberant or projects from its surroundings
bulge: something that bulges out or is protuberant or projects from its surroundings
belly
a part that bulges deeply
belly: a part that bulges deeply
caput
a headlike protuberance on an organ or structure
caput: a headlike protuberance on an organ or structure
mogul
a bump on a ski slope
mogul: a bump on a ski slope
nub
a small lump or protuberance
nub: a small lump or protuberance
snag
a sharp protuberance
snag: a sharp protuberance
wart
any small rounded protuberance (as on certain plants or animals)
wart: any small rounded protuberance (as on certain plants or animals)
node
any thickened enlargement
node: any thickened enlargement
bow
something curved in shape
bow: something curved in shape
crescent
any shape resembling the curved shape of the moon in its first or last quarters
crescent: any shape resembling the curved shape of the moon in its first or last quarters
depression
a concavity in a surface produced by pressing
depression: a concavity in a surface produced by pressing
dimple
any slight depression in a surface
dimple: any slight depression in a surface
hyperboloid
a quadric surface generated by rotating a hyperbola around its main axis
hyperboloid: a quadric surface generated by rotating a hyperbola around its main axis
paraboloid
a surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis
paraboloid: a surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis
ellipsoid
a surface whose plane sections are all ellipses or circles
ellipsoid: a surface whose plane sections are all ellipses or circles
flank
a subfigure consisting of a side of something
flank: a subfigure consisting of a side of something
hypotenuse
the side of a right triangle opposite the right angle
hypotenuse: the side of a right triangle opposite the right angle
altitude
the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)
altitude: the perpendicular distance from the base of a geometric figure to the opposite vertex (or side if parallel)
base
the bottom side of a geometric figure from which the altitude can be constructed
base: the bottom side of a geometric figure from which the altitude can be constructed
balance
equality of distribution
balance: equality of distribution
conformation
a symmetrical arrangement of the parts of a thing
conformation: a symmetrical arrangement of the parts of a thing
symmetry
balance among the parts of something
symmetry: balance among the parts of something
disproportion
lack of proportion; imbalance among the parts of something
disproportion: lack of proportion; imbalance among the parts of something
spheroid
a shape that is generated by rotating an ellipse around one of its axes
spheroid: a shape that is generated by rotating an ellipse around one of its axes
sphere
a three-dimensional closed surface such that every point on the surface is equidistant from the center
sphere: a three-dimensional closed surface such that every point on the surface is equidistant from the center
hemisphere
half of a sphere
hemisphere: half of a sphere
sphere
a solid figure bounded by a spherical surface (including the space it encloses)
sphere: a solid figure bounded by a spherical surface (including the space it encloses)
ball
an object with a spherical shape
ball: an object with a spherical shape
spherule
a small sphere
spherule: a small sphere
cylinder
a surface generated by rotating a parallel line around a fixed line
cylinder: a surface generated by rotating a parallel line around a fixed line
torus
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
torus: a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
toroid
the doughnut-shaped object enclosed by a torus
toroid: the doughnut-shaped object enclosed by a torus
column
anything that approximates the shape of a column or tower
column: anything that approximates the shape of a column or tower
plume
anything that resembles a feather in shape or lightness
plume: anything that resembles a feather in shape or lightness
columella
a small column (or structure resembling a column) that is a part of a plant or animal
columella: a small column (or structure resembling a column) that is a part of a plant or animal
hoodoo
(geology) a column of weathered and unusually shaped rock
hoodoo: (geology) a column of weathered and unusually shaped rock
barrel
a bulging cylindrical shape; hollow with flat ends
barrel: a bulging cylindrical shape; hollow with flat ends
pipe
a hollow cylindrical shape
pipe: a hollow cylindrical shape
pellet
a small sphere
pellet: a small sphere
bolus
a small round soft mass (as of chewed food)
bolus: a small round soft mass (as of chewed food)
drop
a shape that is spherical and small
drop: a shape that is spherical and small
dewdrop
a drop of dew
dewdrop: a drop of dew
teardrop
anything shaped like a falling drop (as a pendant gem on an earring)
teardrop: anything shaped like a falling drop (as a pendant gem on an earring)
ridge
any long raised strip
ridge: any long raised strip
corrugation
a ridge on a corrugated surface
corrugation: a ridge on a corrugated surface
rim
the shape of a raised edge of a more or less circular object
rim: the shape of a raised edge of a more or less circular object
point
a V shape
point: a V shape
taper
a convex shape that narrows toward a point
taper: a convex shape that narrows toward a point
quadric
a curve or surface whose equation (in Cartesian coordinates) is of the second degree
quadric: a curve or surface whose equation (in Cartesian coordinates) is of the second degree
boundary
a line determining the limits of an area
boundary: a line determining the limits of an area
margin
the boundary line or the area immediately inside the boundary
margin: the boundary line or the area immediately inside the boundary
periphery
the outside boundary or surface of something
periphery: the outside boundary or surface of something
brink
a region marking a boundary
brink: a region marking a boundary
upper_bound
(mathematics) a number equal to or greater than any other number in a given set
upper_bound: (mathematics) a number equal to or greater than any other number in a given set
lower_bound
(mathematics) a number equal to or less than any other number in a given set
lower_bound: (mathematics) a number equal to or less than any other number in a given set
diagonal
a line or cut across a fabric that is not at right angles to a side of the fabric
diagonal: a line or cut across a fabric that is not at right angles to a side of the fabric
diagonal
(geometry) a straight line connecting any two vertices of a polygon that are not adjacent
diagonal: (geometry) a straight line connecting any two vertices of a polygon that are not adjacent
dip
a depression in an otherwise level surface
dip: a depression in an otherwise level surface
cup
any cup-shaped concavity
cup: any cup-shaped concavity
incision
a depression scratched or carved into a surface
incision: a depression scratched or carved into a surface
incisure
(anatomy) a notch or small hollow
incisure: (anatomy) a notch or small hollow
notch
a V-shaped indentation
notch: a V-shaped indentation
score
a slight surface cut (especially a notch that is made to keep a tally)
score: a slight surface cut (especially a notch that is made to keep a tally)
sag
a shape that sags
sag: a shape that sags
wrinkle
a slight depression in the smoothness of a surface
wrinkle: a slight depression in the smoothness of a surface
crow's_foot
a wrinkle in the skin at the outer corner of your eyes
crow's_foot: a wrinkle in the skin at the outer corner of your eyes
dermatoglyphic
the lines that form patterns on the skin (especially on the fingertips and the palms of the hands and the soles of the feet)
dermatoglyphic: the lines that form patterns on the skin (especially on the fingertips and the palms of the hands and the soles of the feet)
frown_line
a facial wrinkle associated with frowning
frown_line: a facial wrinkle associated with frowning
line_of_life
a crease on the palm; its length is said by palmists to indicate how long you will live
line_of_life: a crease on the palm; its length is said by palmists to indicate how long you will live
line_of_heart
a crease on the palm; palmists say it indicates your emotional nature
line_of_heart: a crease on the palm; palmists say it indicates your emotional nature
line_of_fate
a crease on the palm; palmists say it indicates how successful you will be
line_of_fate: a crease on the palm; palmists say it indicates how successful you will be
crevice
a long narrow depression in a surface
crevice: a long narrow depression in a surface
fold
an angular or rounded shape made by folding
fold: an angular or rounded shape made by folding
pucker
an irregular fold in an otherwise even surface (as in cloth)
pucker: an irregular fold in an otherwise even surface (as in cloth)
indentation
a concave cut into a surface or edge (as in a coastline)
indentation: a concave cut into a surface or edge (as in a coastline)
cleft
a split or indentation in something (as the palate or chin)
cleft: a split or indentation in something (as the palate or chin)
stria
any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue
stria: any of a number of tiny parallel grooves such as: the scratches left by a glacier on rocks or the streaks or ridges in muscle tissue
roulette
a line generated by a point on one figure rolling around a second figure
roulette: a line generated by a point on one figure rolling around a second figure
cycloid
a line generated by a point on a circle rolling along a straight line
cycloid: a line generated by a point on a circle rolling along a straight line
curate_cycloid
a cycloid generated by a point inside the rolling circle
curate_cycloid: a cycloid generated by a point inside the rolling circle
prolate_cycloid
a cycloid generated by a point outside the rolling circle
prolate_cycloid: a cycloid generated by a point outside the rolling circle
sine_curve
the curve of y=sin x
sine_curve: the curve of y=sin x
epicycle
a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid
epicycle: a circle that rolls around (inside or outside) another circle; generates an epicycloid or hypocycloid
epicycloid
a line generated by a point on a circle rolling around another circle
epicycloid: a line generated by a point on a circle rolling around another circle
cardioid
an epicycloid in which the rolling circle equals the fixed circle
cardioid: an epicycloid in which the rolling circle equals the fixed circle
hypocycloid
a line generated by a point on a circle that rolls around inside another circle
hypocycloid: a line generated by a point on a circle that rolls around inside another circle
shapelessness
an amorphous or indefinite shape
shapelessness: an amorphous or indefinite shape
blob
an indistinct shapeless form
blob: an indistinct shapeless form
void
an empty area or space
void: an empty area or space
space
an empty area (usually bounded in some way between things)
space: an empty area (usually bounded in some way between things)