# concave

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concave
left to right: biconcave,
plano-concave, and
concavo-convex lenses

## con·cave

(kŏn-kāv′, kŏn′kāv′)
Curved like the inner surface of a sphere.
n.
A concave surface, structure, or line.
tr.v. con·caved, con·cav·ing, con·caves
To make concave.

[Middle English, from Latin concavus : com-, intensive pref.; see com- + cavus, hollow; see keuə- in Indo-European roots.]

con·cave′ness n.

## concave

(ˈkɒnkeɪv; kɒnˈkeɪv)
1. curving inwards
2. (General Physics) physics having one or two surfaces curved or ground in the shape of a section of the interior of a sphere, paraboloid, etc: a concave lens.
3. (Mathematics) maths (of a polygon) containing an interior angle greater than 180°
4. an obsolete word for hollow
vb
(tr) to make concave
[C15: from Latin concavus arched, from cavus hollow]
ˈconcaveness n

## con•cave

(adj., v. kɒnˈkeɪv, ˈkɒn keɪv; n. ˈkɒn keɪv)

1. curved or hollowed inward like the inside of a circle or sphere. Compare convex (def. 1).
2. (of a polygon) having at least one interior angle greater than 180°.
n.
3. a concave surface, part, line, or thing.
v.t.
4. to make concave.
[1375–1425; late Middle English (< Middle French) < Latin concavus hollow. See con-, cave]
con•cave′ness, n.

## con·cave

(kŏn′kāv′)
Curved inward, like the inside of a circle or sphere.

## concave

Past participle: concaved
Gerund: concaving

Imperative
concave
concave
Present
I concave
you concave
he/she/it concaves
we concave
you concave
they concave
Preterite
I concaved
you concaved
he/she/it concaved
we concaved
you concaved
they concaved
Present Continuous
I am concaving
you are concaving
he/she/it is concaving
we are concaving
you are concaving
they are concaving
Present Perfect
I have concaved
you have concaved
he/she/it has concaved
we have concaved
you have concaved
they have concaved
Past Continuous
I was concaving
you were concaving
he/she/it was concaving
we were concaving
you were concaving
they were concaving
Past Perfect
Future
I will concave
you will concave
he/she/it will concave
we will concave
you will concave
they will concave
Future Perfect
I will have concaved
you will have concaved
he/she/it will have concaved
we will have concaved
you will have concaved
they will have concaved
Future Continuous
I will be concaving
you will be concaving
he/she/it will be concaving
we will be concaving
you will be concaving
they will be concaving
Present Perfect Continuous
I have been concaving
you have been concaving
he/she/it has been concaving
we have been concaving
you have been concaving
they have been concaving
Future Perfect Continuous
I will have been concaving
you will have been concaving
he/she/it will have been concaving
we will have been concaving
you will have been concaving
they will have been concaving
Past Perfect Continuous
Conditional
I would concave
you would concave
he/she/it would concave
we would concave
you would concave
they would concave
Past Conditional
I would have concaved
you would have concaved
he/she/it would have concaved
we would have concaved
you would have concaved
they would have concaved

## concave

curving inward
ThesaurusAntonymsRelated WordsSynonymsLegend:
 Adj. 1 concave - curving inwardintrusive - thrusting inward; "an intrusive arm of the sea"bulging, convex - curving or bulging outward

## concave

adjective Remove the flesh from the concave part of the shell.

## concave

Curving inward:
Translations
مُقعَّـر
vydutý
hulkonkav
nõgus
homorúkonkáv
íhvolfur
요면
įdubęsįgaubtasįgaubtumas
iedobtsieliekts
vydutý
içbükeykonkav