Alga

['ælgə] or ['ælgɚ]

Definition

(noun.) primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves.

Typed by Elvin--From WordNet

Definition

(n.) 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 confervae, etc.

Inputed by Ezra