ふむふむと思ってde Vaanの語源辞書でmeminiを引くと気になることが書いてあった．'The older etymologies (WH, EM) derive memor from the root *(s)mer- 'to remind'. More recent works (from Leumann 1977: 610 on) agree on a derivation *me-mn-os- > *memnor- >> *memor-. This is more attractive from the point of view of PIE morphology: for *(s)mer-, the only certain reduplicated formation is a pr. *smi-(s)mer-, which would not yield memor. The price we must pay is an ad hoc dissimilation or analogical change from *memnor to memor'.