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mastery

[mas-tuh-ree, mah-stuh-] /ˈmæs tə ri, ˈmɑ stə-/
noun, plural masteries for 1-4.
1.
command or grasp, as of a subject:
a mastery of Italian.
2.
superiority or victory:
mastery over one's enemies.
3.
the act of mastering.
4.
expert skill or knowledge.
5.
the state of being master; power of command or control.
Origin
1175-1225
1175-1225; master + -y3; replacing Middle English maistrie < Old French
Related forms
nonmastery, noun, plural nonmasteries.
premastery, noun
remastery, noun, plural remasteries.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for masteries

mastery

/ˈmɑːstərɪ/
noun (pl) -teries
1.
full command or understanding of a subject
2.
outstanding skill; expertise
3.
the power of command; control
4.
victory or superiority
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 masteries

mastery

n.

early 13c., mesterie, "condition of being a master," also "superiority, victory;" from Old French maistrie, from maistre "master" (see master (n.)). Meaning "intellectual command" (of a topic, etc.) is from 1660s.

Online Etymology Dictionary, © 2010 Douglas Harper
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