noun, plural terminologies.
the system of terms belonging or peculiar to a science, art, or specialized subject; nomenclature: the terminology of botany.
the science of terms, as in particular sciences or arts.

1795–1805; < Medieval Latin termin(us) term + -o- + -logy

terminological [tur-muh-nl-oj-i-kuhl] , adjective
terminologically, adverb
terminologist, noun
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World English Dictionary
terminology (ˌtɜːmɪˈnɒlədʒɪ)
n , pl -gies
1.  the body of specialized words relating to a particular subject
2.  the study of terms
[C19: from Medieval Latin terminus term, from Latin: end]

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

1801, from Ger. Terminologie (1786), a hybrid coined by C.G. Schütz of Jena, from M.L. terminus "word, expression" (see terminus) + Gk. -logia "a dealing with, a speaking of."
Online Etymology Dictionary, © 2010 Douglas Harper
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Encyclopedia Britannica


in colonial history, an unstable rudimentary hybrid language used as a means of communication between persons having no other language in common. Although the term was long synonymous with pidgin-as can be seen by the use of jargon in the names of such pidgins as Chinook Jargon and Mobilian Jargon-in the 1980s some linguists began restricting its use to denote pre-pidgins, or early developmental forms of pidgins.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
Not only did the guy do a pirate voice, but he changed the wording of the
  options to use pirate terminology.
The best terminology is tobacco addiction, with nicotine physical dependence.
And among those who agreed to try, the discussions quickly bogged down in dense
Cold-war terminology implied that third-world countries had limited room for
  independent manoeuvre.
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