life form

or life-form

noun

life form

biology the characteristic overall form and structure of a mature organism on the basis of which it can be classified
any living creature
(in science fiction) an alien

First recorded in 1850–55

The summit of the stone pile was now covered with lizards of some type, apparently the local life-form.

The systematic collections accumulated during his long life form one of the glories of the Kew Herbarium.

They have come here to take over these planets, and have started out with the first, natural moves of any invading life-form.

When you attack them, they merely say 'The life-form of Earth is sending out controlled machines.

Minutes later a life-form investigator came with a small cage, which held a guinea pig.

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