Definitions for umbelˈʌm bəl
Random House Webster's College Dictionary
an inflorescence in which a number of flower stalks or pedicels, nearly equal in length, spread from a common center.
Origin of umbel:
1590–1600; < L umbella a sunshade, der. of umbra shadow, shade
flat-topped or rounded inflorescence characteristic of the family Umbelliferae in which the individual flower stalks arise from about the same point; youngest flowers are at the center
A flat-topped or rounded flower-cluster (= inflorescence) in which the individual flower stalks arise from the same point, the youngest flowers being at the centre.
Origin: From umbella
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