somatoblast

noun

so·​ma·​to·​blast

ˈsōmətəˌblast

1

a

: a cleavage cell of an annelid worm that is the precursor of most of the trunk ectoderm, the nervous system, and the nephridia

b

: cleavage cells descended from the primary somatoblast cell of an annelid

2

: the outer layer of cells of the nematogen of a dicyemid mesozoan

Word History

Etymology

somat- + -blast

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