This was originally consigned under attome, which seemed correct for the sense, but of course the word in the text has to rhyme with mies, so the conjectural attome cannot be right. There is a rare atonie in GdfC 8,230b, with the sense of "défaut de virilité, alanguissement" (Oresme) but that is clearly not a plausible meaning here. Atome is attested in OF from the 13th century (cf. FEW 25,672b). The word remains a puzzle, unless it is to be read as attom[i]es ...