Coffee is among the most consumed beverages worldwide. According to Statista, an average person consumes roughly 42.6 liters of coffee per year.
CONCAVE
concave
(adjective) curving inward
Source: WordNet® 3.1
Etymology
Adjective
concave (comparative more concave, superlative most concave)
curved like the inner surface of a sphere or bowl
(geometry, not comparable, of a polygon) not convex; having at least one internal angle greater than 180 degrees.
(functional analysis, not comparable, of a real-valued function on the reals) satisfying the property that all segments connecting two points on the function's graph lie below the function.
hollow; empty
Antonyms
• convex
Noun
concave (plural concaves)
A concave surface or curve.
The vault of the sky.
One of the celestial spheres of the Ptolemaic or geocentric model of the world.
(manufacturing) An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
(surfing) An indentation running along the base of a surfboard, intended to increase lift.
(skateboarding) An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
Verb
concave (third-person singular simple present concaves, present participle concaving, simple past and past participle concaved)
To render concave, or increase the degree of concavity.
Source: Wiktionary
Con"cave ( or ; 277), a. Etym: [L. concavus; con- + cavus hollow: cf. F. concave. See Cave a hollow.]
1. 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.
2. Hollow; void of contents. [R.] As concave . . . as a worm-eaten nut. Shak.
Con"cave, n. Etym: [L. concavum.]
1. A hollow; an arched vault; a cavity; a recess. Up to the fiery concave towering hight. Milton.
2. (Mech.)
Definition: A curved sheath or breasting for a revolving cylinder or roll.
Con"cave, v. t. [imp. & p. p. concaved (; p. pr.& vb. n. Concaving.]
Definition: To make hollow or concave.
Source: Webster’s Unabridged Dictionary 1913 Edition
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Word of the Day
18 April 2025
GROIN
(noun) the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals
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