noun🔗ShareAlgeAny of many aquatic photosynthetic organisms, including the seaweeds, whose size ranges from a single cell to giant kelps and whose biochemistry and forms are very diverse, some being eukaryotic."The pond was green because it was full of alga. "Der Teich war grün, weil er voller Algen war.organismplantbiologybiochemistrynatureoceanvegetablescienceenvironmentecologyChat with AIVocabulary GamePractice Reading