Word Study
runcinate
CIDE DICTIONARY
runcinate, a. [L. runcinatus, p. p. of runcinare to plane off, fr. runcina a plane.].
Pinnately cut with the lobes pointing downwards, as the leaf of the dandelion. [1913 Webster]
OXFORD DICTIONARY
runcinate, adj. Bot. (of a leaf) saw-toothed, with lobes pointing towards the base.
Etymology
mod.L runcinatus f. L runcina PLANE(2) (formerly taken to mean saw)
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