Um"bel (?), n. [L. umbella a little shadow, umbrella, dim. of umbra shade. See Umbrella.] Bot.

A kind of flower cluster in which the flower stalks radiate from a common point, as in the carrot and milkweed. It is simple or compound; in the latter case, each peduncle bears another little umbel, called umbellet, or umbellule.


© Webster 1913.

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