lo·cu·tion 
(lō-kyshən)
(lō-kyshən)n.
1. A particular word, phrase, or expression, especially one that is used by a particular person or group.
2. Style of speaking; phraseology: "My elderly patients teach me the locution of circumspection and concern" (Bernard Lown).
[Middle English locucion, from Old French locution, from Latin locūtiō, locūtiōn-, from locūtus, past participle of loquī, to speak; see tolkw- in the Appendix of Indo-European roots.]