The Collaborative International Dictionary
Protandrous
Protandrous \Pro*tan"drous\, a. (Bot.) Proterandrous.
Wiktionary
protandrous
a. 1 (label en biology) Exhibiting protandry. 2 (label en botany) Whose male parts (anthers) becomes mature before the female ones (stigma). 3 (label en botany) Whose male parts (antheridium) release their spermatozoids before the female parts (archegonium) mature.