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expertise1

[ek-sper-teez] /ˌɛk spərˈtiz/
noun
1.
expert skill or knowledge; expertness; know-how:
business expertise.
2.
a written opinion by an expert, as concerning the authenticity or value of a work of art, manuscript, etc.
Origin of expertise1
1865-1870
1865-70; < French: survey, report (made by experts); -ise taken as an abstract noun suffix. See expert, -ise2

expertise2

[ek-sper-tahyz] /ˈɛk spərˌtaɪz/
verb (used with object), verb (used without object), expertised, expertising. Chiefly British
1.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for expertise

expertise

/ˌɛkspɜːˈtiːz/
noun
1.
special skill, knowledge, or judgment; expertness
Word Origin
C19: from French: expert skill, from expert

expertize

/ˈɛkspɜːˌtaɪz/
verb
1.
(US) to act as an expert or give an expert opinion (on)
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 expertise
n.

1868, from French expertise (16c.) "expert appraisal, expert's report," from expert (see expert). Earlier in same sense was expertness (c.1600).

Online Etymology Dictionary, © 2010 Douglas Harper
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18
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