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n. pl. con·cav·i·ties
1. The state of being curved like the inner surface of a sphere.
2. A surface or structure configured in such a curve.


n, pl -ties
1. the state or quality of being concave
2. a concave surface or thing; cavity


(kɒnˈkæv ɪ ti)

n., pl. -ties.
1. the state or quality of being concave.
2. a concave surface or thing; cavity.
[1350–1400; < Late Latin]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.concavity - a shape that curves or bends inwardconcavity - a shape that curves or bends inward
solid - a three-dimensional shape
dome - a concave shape whose distinguishing characteristic is that the concavity faces downward
fossa, pit - a concavity in a surface (especially an anatomical depression)
niche, recess, recession, corner - a small concavity
bowl, trough - a concave shape with an open top
scoop, pocket - a hollow concave shape made by removing something
imprint, impression, depression - a concavity in a surface produced by pressing; "he left the impression of his fingers in the soft mud"
cup - any cup-shaped concavity; "bees filled the waxen cups with honey"; "he wore a jock strap with a metal cup"; "the cup of her bra"
indentation, indenture - a concave cut into a surface or edge (as in a coastline)
2.concavity - the property possessed by a concave shape
shape, configuration, conformation, contour, form - any spatial attributes (especially as defined by outline); "he could barely make out their shapes"
hollowness - the property of having a sunken area


An area sunk below its surroundings:
íhvolfa; íhvolfur hlutur


[kɒnˈkævɪtɪ] Nconcavidad f


nKonkavität f


(konˈkeiv) adjective
(of an object or surface) curved inwards. Spoons are concave.
conˈcavity (-ˈkӕ-) noun
References in classic literature ?
Suddenly I noticed that the circular westward outline of the sun had changed; that a concavity, a bay, had appeared in the curve.
The uniform concavity of black cloud was lifting bodily like the lid of a pot, letting in at the earth's edge the coming day, against which the towering monoliths and trilithons began to be blackly defined.
The huzzaing and shouting were little by little lost in the distance, and only the discharge of the ship's guns could be heard in the concavity beneath the balloon, as the latter sped on its flight.
The forms of these ring-shaped ear spools vary from open-ended cylinders with only a slight concavity at the midsection to cylinders in which the walls at both ends have been turned outward so as to form flanges.
A], respectively (proof of concavity is trivial here).
As indicated above, a normal loop has a straight line between peak flow and zero flow but any concavity along that line indicates varying degree of airway obstruction with the degree of obstruction in proportion to the degree of concavity.
The endothermic component in the Raz-85 allowed for faster cooling with no cell collapse or concavity that occurred with the azo foaming agent.
A concavity was beginning to develop in the inferior border of [C.
The concavity of the yield curve--the level of intermediate-term bond yields, relative to the average of short- and long-term bond yields--is a good proxy for the level of term premiums.
Changing this parameter actually influences the degree of concavity at the areas near the smallest radius (figure 2).
Curvilinear probes facilitate skin-probe contact over these bony ridges, particularly in the concavity between the malleoli and the tendo archilles.