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“primigenial”
primigenial (adjective) (not comparable)
Descriptive of or characteristic of being the first born; original; or basic: Hazel's primigenial birth order in her family meant that she was the initial child and so she was the oldest of three children.
This entry is located in the following units:
genus, genesis-, -gen, -gene, -genesis, -genetic, -genic, -geny, -genous
(page 9)
prim-, primi-, primo-
(page 3)