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Definition of Term

(english) Large group of lower animals that lack a spinal column. (See also: vertebral column, vertebrates, protozoans)
(french) Grand groupe d'animaux inférieurs qui ne possèdent pas de colonne vertébrale. (See also: vertebral column, vertebrates, protozoans)
(portuguese) Grande grupo de animais inferiores sem coluna vertebral. (See also: vertebral column, vertebrates, protozoans)

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