I'm trying to read this sentence, where Cicero finds Roman Gods in relevance to the Latin verbs:
Saturnus quia se saturat annis, Mavors quia magna vertit, Minerva quia minuit aut quia minatur, Venus quia venit ad omnia, Ceres a generendo. (Cicero, de natura deorum, III 24, 62)
of course with the help of English translation:
Taturnus is so called because he is 'sated with years,' Mavors because he 'subverts the great,' Minerva because she 'minishes,' or because she is 'minatory,' Venus because she 'visits' all things, Ceres from gero 'to bear.' (H. Rackham)
I could follow the structure until Venus, since there are always quia and third-person singular present verbs. Could anyone please explain me how I can then understand Ceres description? Is there a specific construction behind this "a generendo" to have it as "from gero"?