The definition of somatic is something that relates to the physical body.(adjective)
An example of somatic used as an adjective is somatic cell.
See somatic in Webster's New World College Dictionary
Origin: Gr sōmatikos < sōma (gen. sōmatos), body: see soma
See somatic in American Heritage Dictionary 4
Origin: French somatique
Origin: , from Greek sōmatikos
Origin: , from sōma, sōmat-, body; see soma1.
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