mnemosynon
Could not find mnemosynen in Logeion dictionaries.
mnemosynen Noun: neuter vocative singular of mnemosynon
mnēmŏsȳnon, i, n., = μνημοσυνον,
- a memorial: mnemosynon mei sodalis, Cat. 12, 13.
mnēmŏsўnon (-num), ī, n. (μνημόσυνον), souvenir, ce qui évoque qqn : Catul. 12, 13.