mnemonic

• POS: Adjective, Noun
• HYPHEN: mne=mon=ic

CIDE DICTIONARY

mnemonic, a. [Gr. mnhmoniko`s, fr. mnh`mwn mindful, remembering, mnh`mh memory, mna^sqai to think on, remember; akin to E. mind.].

 Assisting in memory; helping to remember; as, a mnemonic device.  [1913 Webster]

mnemonic, n. 

•  Something used to assist the memory, as an easily remembered acronym or verse.  [WordNet 1.5]
•  An abbreviated word that resembles the full word, used so as to be easily recognized; as, the CIDE uses ... tags as mnemnonics for an italicised word or field.  [PJC]

  " In basic organic chemistry class, one may learn the mnenomic “Oh my, such good apple pie” to help remember the names of the dicarboxylic acids in increasing order of length, namely: oxalic, malonic, succinic, glutaric, adipic, and pimelic acids. (From L. Fieser's Organic Chemistry text)."

OXFORD DICTIONARY

mnemonic, adj. & n.
--adj. of or designed to aid the memory.
--n. a mnemonic device.

Derivative

mnemonically adv. mnemonist n.

Etymology

med.L mnemonicus f. Gk mnemonikos f. mnemon mindful