Clue: Memory's nudger, edifying, maybe one neatly inducing commemoration using initial letters? (8)
Answer: MNEMONIC
Explanation: Definition: Memory's nudger, edifying, maybe one neatly inducing commemoration using initial letters
The 'primarily' clue in disguise ('using initial letters') of '**M**emory's **N**udger **E**difying **M**aybe **O**ne **N**eatly **I**nducing **C**ommemoration', with an &lit definition (if slightly stretched).