G / gĕrundĭum
noun

gĕrundĭum

gen. gĕrundii · gender neuter · decl. 2nd
id., in gram.
a gerund
a gerund, Diom. p. 350 P.; Prisc. p. 808 ib. al.; also called gĕrundīvus mŏdus, Serv. p. 1788 P.