peritrochium

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English

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Etymology

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From New Latin peritrochium, from Koine Greek περιτρόχιον (peritrókhion), from Ancient Greek περίτροχος (perítrokhos, circular).

Noun

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peritrochium (plural peritrochia)

  1. (mechanics) The wheel which, together with the axle, forms the axis in peritrochio. [18th–19th c.]
    • 1751, [Tobias] Smollett, The Adventures of Peregrine Pickle [], volumes (please specify |volume=I to IV), London: Harrison and Co., [], →OCLC:
      [T]he engineer proceeded to the illustration of his mechanicks, tilting up his hand like a balance, thrusting it forward by way of lever, embracing the naturalist's nose like a wedge betwixt two of his fingers, and turning it round, with the momentum of a screw or peritrochium.