(Click to enlarge)

concave

left to right: biconcave, plano-concave, and concavo-convex lenses (Precision Graphics)

adj.

Curved like the inner surface of a sphere.

n.

A concave surface, structure, or line.

tr.v., -caved, -cav·ing, -caves.

To make concave.

[Middle English, from Latin concavus : com-, intensive pref.; see com– + cavus, hollow.]

concavely con·cave'ly adv.
concaveness con·cave'ness n.

adjective

Curving inward: cavernous, hollow, indented, sunken. See convex/concave.

adj

Definition: curved, depressed
Antonyms: convex, distended

---

Rounded and somewhat depressed or hollowed out.

• c. face — of the Golgi complex in the developing embryo is associated with maturing secretory vesicles.
• c. shoe — a horseshoe with its inner edge thicker than the outer so that the surface touching the ground is slightly smaller than the surface in contact with the hoof.

IN BRIEF: adj. - Curving inward.

Tutor's tip: The "conclave" (private meeting or session) met in a large "concave" (curved like the inside of a bowl) room.

Dansk (Danish)
adj. - konkav, hul
n. - konkav linie/genstand, himmelhvælving, hulhed, konkavitet
v. tr. - gøre konkav

Nederlands (Dutch)
holrond, concaaf, holrond maken/slijpen

Français (French)
adj. - concave
n. - surface/ligne concave
v. tr. - rendre concave

Deutsch (German)
adj. - konkav, Hohl-
n. - Konkav..., Hohl...
v. - aushöhlen, konkav formen

Ελληνική (Greek)
adj. - κοίλος, γουβωτός, βαθουλωτός, σκαφτός

Italiano (Italian)
concavo

Português (Portuguese)
adj. - côncavo
n. - concavidade (f)

Русский (Russian)
вогнутый

Español (Spanish)
adj. - cóncavo
n. - cóncavo, concavidad
v. tr. - dar forma cóncava

Svenska (Swedish)
adj. - konkav

中文（简体） (Chinese (Simplified))
凹的, 凹面, 凹曲线, 凹面物, 使成凹形

中文（繁體） (Chinese (Traditional))
adj. - 凹的
n. - 凹面, 凹曲線, 凹面物
v. tr. - 使成凹形

한국어 (Korean)
adj. - 옴폭한, 오목면의
n. - 오목면, 오목형
v. tr. - 옴폭하게 하다

日本語 (Japanese)
adj. - 凹面の

العربيه (Arabic)
‏(صفه) مقعر‏

עברית (Hebrew)
adj. - ‮קעור, שקערורי‬
n. - ‮חלק או קו או דבר קעור‬
v. tr. - ‮עשה לקעור, קיער‬

If you are unable to view some languages clearly, click here.

To select your translation preferences click here.

Concave Gold Ring