Lenticular. definitions

lenticular.

shaped like the cross-section of a lens; biconvex .
Found on http://www.umanitoba.ca/faculties/arts/anthropology/manarchnet/appendices/g

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Lenticular.

Biconvex, usually elongate and flattish
Found on https://www.ibiblio.org/pic/botanical_dictionary.htm

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