conjunctio
From LSJ
ἔκστασίς τίς ἐστιν ἐν τῇ γενέσει τὸ παρὰ φύσιν τοῦ κατὰ φύσιν → what is contrary to nature is any developmental aberration from what is in accord with nature (Aristotle, On the Heavens 286a19)
Latin > French (Gaffiot 2016)
conjūnctĭō,¹⁰ ōnis, f. (conjungo),
1 union, liaison : portuum Cic. Verr. 2, 4, 117, l’union des deux ports ; continuatio conjunctioque naturæ quam vocant συμπάθειαν Cic. Div. 2, 142, les liens, les rapports naturels des choses entre elles que les Grecs appellent sympathie (2, 124) ; litterarum inter se conjunctio Quint. 1, 1, 31, action de lier ensemble des lettres [dans la lecture] ; vicinitatis Cic. Planc. 21, liens de voisinage