Mid 19th century. From ancient Greek μνήμη + -o- + -techny, probably after French mnémotechnie. Compare Italian mnemotecne, Spanish mnemotecnia, Portuguese mnemotecnia.
Definition of mnemotechny in US English:
mnemotechny
nounˈniːmə(ʊ)ˌtɛkni
rare
Mnemonics.
Origin
Mid 19th century. From ancient Greek μνήμη + -o- + -techny, probably after French mnémotechnie. Compare Italian mnemotecne, Spanish mnemotecnia, Portuguese mnemotecnia.