Word Study
secundo-geniture
CIDE DICTIONARY
secundo-geniture, n. [L. secundus second + genitura a begetting, generation.].
A right of inheritance belonging to a second son; a property or possession so inherited. [1913 Webster]
"The kingdom of Naples . . . was constituted a secundo-geniture of Spain." [1913 Webster]
For further exploring for "secundo-geniture" in Webster Dictionary Online