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lentiform

lentiform, a.
  (ˈlɛntɪfɔːm)
  [f. L. lent-, lens lentil + -iform.]
  Having the form of a lentil or of a lens.

1706 Phillips (ed. Kersey), Lentiform Prominences. 1830 Lindley Nat. Syst. Bot. 165 Seeds lentiform, pendulous. 1850 H. Miller Footpr. Creat. (1874) 337 The form of the eye-orbit..was lentiform in the Coccosteus.

Oxford English Dictionary

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