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Webster 1913 Edition

(pĕnˊtȧ-dĕl′fŭs)

Adj.

[

Penta-

+ Gr.

ἀδελφόσ

brother.]

(Bot.)

Having the stamens arranged in five clusters, those of each cluster having their filaments more or less united, as the flowers of the linden.

pentadelphous ‎(not comparable)

(botany) Having its stamens fused together at least partly by the filaments so that they form five separate groups, some of which may contain a single stamen.