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n. Any of various chiefly aquatic, eukaryotic, photosynthetic organisms, ranging in size from single-celled forms to the giant kelp. Algae were once considered to be plants but are now classified separately because they lack true roots, stems, leaves, and embryos.

n. Any of many aquatic photosynthetic organisms, whose size ranges from a single cell to giant kelps and whose form is very diverse; some are eukaryotic and some prokaryotic; includes the seaweeds.

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 confervæ, etc. The algae are primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves.

n. A cryptogam of the class of Algæ.

n. primitive chlorophyll-containing mainly aquatic eukaryotic organisms lacking true stems and roots and leaves

"The alga, which is native to the Pacific Ocean, first showed up three years ago in"

protoctist   

boring alga   

red algae    confervoid algae    green algae    brown algae    euglenid    yellow-green algae    chlorophyte    euglenoid    diatom    seaweed   

haemagglutinin    color-blindness    diatoms    primary-response    springwater    self-heating    slow-rising    dragonette    merfolk    infestans=