noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   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.
2. 2
   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 wordnet
3. 3
   The pileus of certain fungi.

Synonyms

All synonyms

amentblossomconeheadpine conerundle

Etymology

Borrowed from Latin umbella (“umbrella”). Compare umbrella, composed of the same etymological elements but formed independently.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.