Definition of concave in English:

concave

Pronunciation: /känˈkāv//ˈkänˌkāv/

adjective

  • Having an outline or surface that curves inward like the interior of a circle or sphere.

    Compare with convex
    • ‘Choose only firm tubers and look for those with tiny sprouts showing on their upper, concave surfaces.’
    • ‘Similar double curvatures were used for concave lenses, and even more complicated corrections for astigmatism.’
    • ‘Pictures of bound feet show the toes bent right under the sole, which is so curved it is concave.’
    • ‘The shape of each is similar, with a slightly concave surface, a rolled rim, and a high foot ring.’
    • ‘It is possible to see the outline of a concave façade and shallow forecourt.’
    • ‘Depressions are concave regions on protein surfaces that have no constriction at the mouth.’
    • ‘The first surface of the head support arm is concave and the second surface of the head support arm is convex.’
    • ‘McElwee contrasts convex and concave forms with building recesses and relief carvings.’
    • ‘Above it, to signal the presence of occupied space, is a shallow concave circle dug out of the ground.’
    • ‘Galileo's telescope had a convex object lens but a concave eye-piece.’
    • ‘You maintain your lower back curve, which is concave, by sitting straight in your chair.’
    • ‘Where the old car had concave surfaces on the doors, the new doors swell outwards, lending more bulk to the profile.’
    • ‘The articular surface itself is concave, not convex as in many chelonioids.’
    • ‘This is a small group of specialized ellesmerocerids with a concave outline of siphuncle segments.’
    • ‘You stand in a dark room looking at a round concave surface perhaps five feet in diameter.’
    • ‘If the outside edges appear to get sanded first, yet the middle part isn't affected, then you have a concave surface.’
    • ‘Its profile may show anything from a rather gentle concave upward curve to a series of complex scarps and sediment-filled basins.’
    • ‘The human shoulder blade is a thin triangle of bone with a thick crest along one edge, and a shallow, concave joint surface in one corner.’
    • ‘As the enamel shrinks on melting and cools with a concave surface, more has to be poured in and the process repeated.’
    • ‘The exterior walls were composed of concave and convex red bricks.’
    curved inwards, hollow, hollowed out, scooped out, depressed, sunken
    indented, recessed
    incurved, incurvate
    View synonyms

Origin

Late Middle English: from Latin concavus, from con- together + cavus hollow.

Pronunciation:

concave

/känˈkāv//ˈkänˌkāv/