mnemonic (adj) – something that aids memory
BREAKDOWN: MNE- (memory) + -IC (pertaining to)
— a mnemon is a unit of memory
EASILY CONFUSED WITH: mnemenic (adj) – related to memory
This word is built on the root MNE-, which means memory or to remember.
Common MNE- words include amnesia.
More esoteric MNE- words include dysmnesia and mneme.