Par`a*gen"e*sis (par`a*jen"E*sis), n. [Pref. para- + genesis.] (Min.)
The science which treats of minerals with special reference to their origin.
© Webster 1913
Par`a*gen"e*sis (?), n. [NL.; para- + genesis.] (Geol.)
(a)
The formation of minerals in contact, so as to affect one another's development.
(b)
The order in which minerals occurring together in rocks and veins have developed.
© Webster 1913