alga

2 definitions found

alga - Collaborative International Dictionary of English v.0.48 :

  Alga \Al"ga\, n.; pl. Alg[ae] or algae. [L., seaweed.]
     (Bot.)
     A kind of seaweed; pl. the class of cellular cryptogamic
     plants which includes the black, red, and green seaweeds, as
     kelp, dulse, sea lettuce, also marine and fresh water
     conferv[ae], etc. The algae are primitive
     chlorophyll-containing mainly aquatic eukaryotic organisms
     lacking true stems and roots and leaves.
     [1913 Webster + WordNet 1.5]

alga - WordNet (r) 2.1 (2005) :

  alga
      n 1: primitive chlorophyll-containing mainly aquatic eukaryotic
           organisms lacking true stems and roots and leaves [syn:
           alga, algae]