primitive (redirected from primitiveness)

primitive /prim·i·tive/ (prim´i-tiv) first in point of time; existing in a simple or early form that shows little complexity.

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prim·i·tive (prm-tv)

adj.

1. Primary; basic.

2. Of or being an earliest or original stage.

3. Being little evolved from an early ancestral type.

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primitive

first in point of time; existing in a simple or early form; showing little evolution.

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primitive groove

longitudinal furrow in the primitive streak of the embryo.

primitive knot

see hensen's node.

primitive node

enlarged cranial end of the primitive streak.

primitive streak

the thickened median area of the epiblast which sets out the future longitudinal axis of the early embryo.