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[ap-er-teyn] /ˌæp ərˈteɪn/
verb (used without object)
to belong as a part, right, possession, attribute, etc.; pertain or relate (usually followed by to):
privileges that appertain to members of the royal family.
Origin of appertain
1350-1400; Middle English a(p)perte(y)nen < Old French apertenir. See ap-1, pertain Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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(intransitive) usually foll by to. to belong (to) as a part, function, right, etc; relate (to) or be connected (with)
Word Origin
C14: from Old French apertenir to belong, from Late Latin appertinēre, from Latin ad- + pertinēre to pertain
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for appertain

late 14c., from Anglo-French apartenir, Old French apartenir (12c.) "be related to; be incumbent upon," from Late Latin appertinere "to pertain to," from ad- "to, completely" (see ad-) + pertinere "to belong to" (see pertain). To belong as parts to the whole, or as members to a family or class. Related: Appertained; appertaining.

Online Etymology Dictionary, © 2010 Douglas Harper
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