diction Look up diction at Dictionary.com
1540s, from L.L. dictionem (nom. dictio), from L. "a saying, expression, word," from dic-, stem of dicere "speak, tell, say," related to dicare "proclaim, dedicate," from PIE base *deik- "to point out" (cf. Skt. dic- "point out, show," Gk. deiknynai "to prove," O.H.G. zeigon, Ger. zeigen "to show," O.E. teon "to accuse," tęcan "to teach").