ALGA Meaning of ALGA in English transcription, транскрипция: [ ˈælɡə ]n. (pl. algae) (usu. in pl.) a non-flowering stemless water-plant, esp. seaweed and phytoplankton. øøalgal adj. algoid adj. [L] English main colloquial, spoken dictionary. Английский основной разговорный словарь. 2012