ETYM Latin umbella a little shadow, umbrella, dim. of umbra shade. Related to Umbrella.
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.
Mass of flowers springing from a single center.
Umbrellalike inflorescence with stalks of equal length springing from one point, as in carrot.