RhymeZone: protandrous definitions

Definitions of protandrous:

adjective: (biology) Exhibiting protandry.
adjective: (botany) Whose male parts (anthers) becomes mature before the female ones (stigma).
adjective: (botany) Whose male parts (antheridia) release their spermatozoids before the female parts (archegonia) mature.

(Definitions from Wiktionary)