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an individual animal, plant, or single-celled life form.

生物, 有機体, (人の)体; 微生物

the material structure of an individual life form:

有機的組織［構造］体

e.g. the heart's contribution to the maintenance of the human organism.

a whole with interdependent parts, likened to a living being:

e.g. the upper strata of the American social organism.

organismal |ˌôrɡəˈnizməl| adjective

organismic |ˌôrɡəˈnizmik| adjective

early 18th century (in the sense ‘organization’, from organize): current senses derive from French organisme.