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Webster 1913 Edition

(k?r′?-n?l)

Noun.

[L.

coronula

, dim. of

corona

crown.]

(Bot.)

A coronet or little crown of a seed; the downy tuft on seeds. See

Martyn.

Noun.

[from corona, a crown.] A coronet or little crown of a seed; the downy tuft on seeds.

coronule ‎(plural coronules)

(botany) A coronet or little crown of a seed; the downy tuft on seeds.
(Can we find and add a quotation of Martyn to this entry?)