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Webster 1913 Edition
Primogenial
Priˊmo-ge′ni-al
,Adj.
 [See 
Primigenial
.] First born, made, or generated; original; primary; elemental; 
as, 
. primogenial 
lightGlanvill.
 Webster 1828 Edition
Primogenial
PRIMOGE'NIAL
,Adj.
 First born, made or generated; original; primary; constituent; elemental; as primogenial light; primogenial bodies.