Also found in: Thesaurus, Medical, Financial, Encyclopedia, Wikipedia.


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 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 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.
gov/feature/jpl/arecibo-radar-returns-with-asteroid-phaethon-images) NASA , the asteroid is roughly shaped like a ball and "has a large concavity, or depression, at least several hundred meters in extent near its equator, and a conspicuous dark, circular feature near one of the poles.
Nevertheless, a statistics on the flame concavity and on the flame onset location have been presented in previous papers reported in Ref [18, 21].
ABSTRACT To examine the role of substratum concavity in determining oyster [Crassostrea virginica (Gmelin, 1791)] settlement success, laboratory settlement was examined on natural and artificial substrata of various concavities, defined by width-to-depth (W:D) ratio.
She curled back into the chair's concavity, smoothing her skirts, while he'd sat back on his heels, watching the old man, with wild white hair sprouting from his scalp, sitting back on his heels, his belly bulging as he'd squatted out there, five storeys up.
These factors are related not only to cutting conditions, but also to factors (tool sharpening error, concavity angle on the bottom face) which cannot be modified directly.
So, from Earth's perspective, the brightness of this scattered light increases poleward along the terminator, thus producing the apparent concavity first noted by Schroter so long ago.
Speaking to the concavity, Ng says, "The car is quite big, so to take a little bit of visual weight out, we decided to scoop out the grille, to take the look of heaviness out.
The Auga can be configured to measure and report on a range of different weld attributes in the firing line -- such as concavity, cracking, undercut and incomplete fusion.
This article reinvestigates the impact of the concavity of an agent's utility function on self-insurance and self-protection decisions when they are modeled in a two-period sense.