lentiform
adj 1: convex on both sides; shaped like a lentil [syn:
{biconvex}, {convexo-convex}, {lenticular}, {lentiform}]
Lentiform \Len"ti*form\ (l[e^]n"t[i^]*f[^o]rm), a. [L. lens,
lentis, lentil + -form: cf. F. lentiforme.]
Lenticular.
[1913 Webster]