The Collaborative International Dictionary of English v.0.48:
Mnemonics \Mne*mon"ics\, n. [Gr. ta~ mnhmonika`: cf. F. mn['e]monique.] The art of memory; a method for improving the memory; a system of precepts and rules intended to assist the memory; artificial memory. [1913 Webster]WordNet (r) 3.0 (2006):
mnemonics n 1: a method or system for improving the memory