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Webster 1913 Edition

Noun.

[L.

verticillus

, dim. of

vertex

a whirl: cf. F.

verticille

. See

(Bot.)

A circle either of leaves or flowers about a stem at the same node; a whorl.

[Written also

verticel

Noun.

[L. verticillus, from vertex, supra.]

In botany, a little whirl; a mode of inflorescence, in which the flowers surround the stem in a kind of ring.

verticil ‎(plural verticils)

(chiefly botany) A whorl, a group of similar parts such as leaves radiating from a shared axis