The Collaborative International Dictionary
Anthodium
Anthodium \An*tho"di*um\, n. [NL., from Gr. ? like flowers, flowery; 'a`nqos flower + e'i^dos form.] (Bot.) The inflorescence of a compound flower in which many florets are gathered into a involucrate head.
Wiktionary
anthodium
n. (context botany English) The inflorescence of a compound flower in which many florets are gathered into an involucrate head.