คำว่า ' concave ' ( ADJ )
มีความหมายในภาษาไทยว่า เว้า
คำตรงกันข้าม : convex
คำนิยามในภาษาอังกฤษ (definition) :
[a.] Hollow and curved or rounded; vaulted; -- said of the interior of a curved surface or line, as of the curve of the of the inner surface of an eggshell, in opposition to convex; as, a concave mirror; the concave arch of the sky.
[a.] Hollow; void of contents.
[n.] A hollow; an arched vault; a cavity; a recess.
[n.] A curved sheath or breasting for a revolving cylinder or roll.
[v. t.] To make hollow or concave.