ter·mi·nol·o·gy 
(tûr′mə-nŏlə-jē)
(tûr′mə-nŏlə-jē)n. pl. ter·mi·nol·o·gies
1. The vocabulary of technical terms used in a particular field, subject, science, or art; nomenclature.
2. The study of nomenclature.
[German Terminologie, from Medieval Latin terminus, expression; see TERM.]
ter′mi·no·logi·cal (-nə-lŏjĭ-kəl) adj.
ter′mi·no·logi·cal·ly adv.
ter′mi·nolo·gist n.