primitive segment

noun

Definition of primitive segment

: any one of the transverse segments into which the body of the embryo of vertebrates becomes marked off by the formation beginning first in the neck region of a series of distinctly limited masses of mesoblast cells on each side of the neural tube

— called also protovertebra

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Dictionary Entries near primitive segment

primitive green

Primitive Methodist

primitive rocks

primitive segment

primitive streak

primitive water

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