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used in a sentence
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Definition angled or curving inward
  • Of what use is genius, if the organ is too convex or too concave and cannot find a focal distance within the actual horizon of human life?
    Emerson, Ralph Waldo  --  Essays, Second Series
  • The golf putter has a concave striking surface.
  • It uses concave micro-mirrors with programmable focal lengths.
  • It terminated in a concave breast of rock, nearly vertical and destitute of vegetation.
    Bierce, Ambrose  --  Present At A Hanging And Other Ghost Stories
  • You will perceive, Watson, that the glasses are concave and of unusual strength.
    Doyle, Sir Arthur Conan  --  The Return of Sherlock Holmes
  • MC Escher's drawing "Concave and Convex" experiments with perspective and perception.
  • Japanese concave cutters are important bonsai tools.
  • The great height at which the kite hung made a great concave curve in the string...
    Stoker, Bram  --  The Lair of the White Worm
  • It flowed in a gentle concave from the road up the mountain, its farther boundary an unbroken line of timber.
    London, Jack  --  The Valley of the Moon
  • A deep depression in the middle, partially filled with water, was ringed by concave slopes that cantilevered dangerously over the water.
    Orson Scott Card  --  Ender's Game
  • They are used by Fremen to line concave planting depressions where they provide a small but reliable source of water.
    Frank Herbert  --  Dune
  • Fixed to the front of it was something that looked like a fencing mask, with the concave side outwards.
    George Orwell  --  1984
  • His face was odd, concave, forehead and chin jutting.
    Don DeLillo  --  White Noise
  • Robert had spindly arms and legs, a soft concave chest and little belly, and eyes that were always red and runny.
    George R.R. Martin  --  A Feast For Crows
  • Her senses feasted, between changes, on that lean, concave, Christlike body.
    Arundhati Roy  --  The God of Small Things
  • It was a concave rectangle-about four yards by two-like a huge fitted sheet .... the crudest approximation of a parachute imaginable.
    Dan Brown  --  Angels & Demons
  • I feel the ropy hardness of his arms, the warmth of his slightly concave chest, as he holds me tight, tighter than anyone has ever held me.
    Christina Baker Kline  --  Orphan Train
  • I placed three fingers against his side where the ribcage seemed concave and pressed.
    Dan Simmons  --  Hyperion
  • They'll go after anything that's warm and concave.
    Neal Stephenson  --  Snow Crash
  • When I raised my arms over my head, my chest became concave.
    Nicole Krauss  --  The History of Love

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