- an inflorescence consisting of a cup-shaped involucre enclosing an apetalous, pistillate flower surrounded by several staminate flowers.
Origin of cyathium
< New Latin < Greek kyáthion, diminutive of kýathos ladle
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for cyathium
The partial inflorescence (cyathium) of Euphorbia (fig. 1) resembles superficially a hermaphrodite flower.
A partial inflorescence, cyathium, bearing the petaloid glands.