adulteratio
From LSJ
ἐγώ εἰμι τὸ φῶς τοῦ κόσμου· ὁ ἀκολουθῶν μοι οὐ μὴ περιπατήσῃ ἐν τῇ σκοτίᾳ ἀλλ' ἕξει τὸ φῶς τῆς ζωῆς → I am the light of the world; he that followeth me shall not walk in darkness but shall have the light of life (John 8:12)
Latin > English (Lewis & Short)
ădultĕrātĭo: ōnis, f. adultero,
I an adulteration, sophistication: croci, Plin. 21, 6, 17, § 32; so prooem. 1, 2.
Latin > French (Gaffiot 2016)
ădultĕrātĭō, ōnis, f., falsification, altération : Plin. 21, 32.