Definitions
1.AdjectiveRelating to spring
2.AdjectivePertaining, similar, or belonging to a germ.
3.AdjectiveRelating to a plant ovary.
4.AdjectiveServing as a point of origin; formative."My upbringing was the germinal idea behind the opera."
5.AdjectiveHighly influential; seminal."This case was germinal to development of the theory of joint participation."
6.Adjective↑ De Vaan, Michiel (2008), “gignō, -ere (> Derivatives > germen, -inis 'shoot, sprout')”, in Etymological Dictionary of Latin and the other Italic Languages (Leiden Indo-European Etymological Dictionary Series; 7), Leiden, Boston: Brill, →ISBN, pages 260-1