al·ter

[awl-ter]
verb (used with object)
1.
to make different in some particular, as size, style, course, or the like; modify: to alter a coat; to alter a will; to alter course.
2.
to castrate or spay.
verb (used without object)
3.
to change; become different or modified.

Origin:
1350–1400; Middle English < Old French alterer < Late Latin alterāre to change, worsen, derivative of Latin alter other

al·ter·er, noun
half-al·tered, adjective
pre·al·ter, verb (used with object)
re·al·ter, verb
un·al·ter·ing, adjective
well-al·tered, adjective

altar, alter.


1. See adjust, change.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Altered is always a great word to know.
So is flibbertigibbet. Does it mean:
a chattering or flighty, light-headed person.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
Collins
World English Dictionary
alter (ˈɔːltə) [Click for IPA pronunciation guide]
 
vb
1.  to make or become different in some respect; change
2.  informal chiefly (US) (tr) castrate a euphemistic word for spay
 
[C14: from Old French alterer, from Medieval Latin alterāre to change, from Latin alter other]
 
'alterable
 
adj
 
'alterably
 
adv
 
altera'bility
 
n

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

alter
late 14c., "to change (something)," from O.Fr. alterer, from M.L. alterare "to change," from L. alter "the other (of the two)," from PIE *al- "beyond" + comp. suffix -ter (cf. other). Intransitive sense "to become otherwise" first recorded 1580s.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

ALT (ā'ěl-tē')
n.
Alanine aminotransferase; an enzyme in serum and body tissues that catalyzes the transfer of amino acid groups from l-alanine to 2-ketoglutarate or the reverse, thus allowing nitrogen to be excreted or incorporated into other compounds.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Memories were made or altered, he proposed, when structures near the synapse
  changed.
We humans have changed that to a limited extent, but it does not seem to have
  altered the stronger link to solar activity.
Certain essential fatty acids may also be altered by heating.
But none of these screeds seem to have altered the political debate.
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