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Webster 1913 Edition

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(s?p′s?-l?)

Noun.

[NL., fr. Gr.

κυψέλη

any hollow vessel.]

(Bot.)

A one-seeded, one-celled, indehiscent fruit; an achene with the calyx tube adherent.

cypsela ‎(plural cypselae or cypselas)

(botany) An achene formed from a double ovary, especially in plants of the family Compositae