molt

[mohlt]
verb (used without object)
1.
(of birds, insects, reptiles, etc.) to cast or shed the feathers, skin, or the like, that will be replaced by a new growth.
verb (used with object)
2.
to cast or shed (feathers, skin, etc.) in the process of renewal.
noun
3.
an act, process, or an instance of molting.
4.
something that is dropped in molting.
Also, especially British, moult.


Origin:
1300–50; earlier mout (with intrusive -l-; cf. fault, assault), Middle English mouten, Old English -mūtian to change (in bi-mūtian to exchange for) < Latin mūtāre to change; see mutate

molt·er, noun
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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World English Dictionary
molt (məʊlt) [Click for IPA pronunciation guide]
 
vb, —n
the usual US spelling of moult

00:10
Molt is a GRE word you need to know.
So is tout. Does it mean:
to solicit business, employment, votes, or the like, importunately.
to cut down; fell:
moult or molt (məʊlt) [Click for IPA pronunciation guide]
 
vb
1.  (of birds, mammals, reptiles, and arthropods) to shed (feathers, hair, skin, or cuticle)
 
n
2.  See also ecdysis the periodic process of moulting
 
[C14 mouten, from Old English mūtian, as in bimūtian to exchange for, from Latin mūtāre to change]
 
molt or molt
 
vb
 
n
 
[C14 mouten, from Old English mūtian, as in bimūtian to exchange for, from Latin mūtāre to change]
 
'moulter or molt
 
n
 
'molter or molt
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

molt
mid-14c., mouten, of feathers, "to be shed," from O.E. (be)mutian "to exchange," from L. mutare "to change" (see mutable). Transitive sense, of birds, "to shed feathers" is first attested 1520s. With parasitic -l-, late 16c., on model of fault, etc. Related: Molting.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

molt (mōlt)
v. molt·ed, molt·ing, molts
To shed periodically part or all of a coat or an outer covering, such as feathers, cuticle, or skin, which is then replaced by a new growth. n.

  1. The act or process of molting.

  2. The material cast off during molting.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
molt   (mōlt)  Pronunciation Key 
To shed an outer covering, such as skin or feathers, for replacement by a new growth. Many snakes, birds, and arthropods molt.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
In studying muscle gene expression over molt cycle, the molt cycle will be
  divided into four main stages.
During the second molt, waterfowl go through a complete molt and replace all
  flight feathers.
Puffins have a synchronous primary molt and flightless period.
Since many of the migratory songbirds and waterfowl molt in the fall, they are
  best observed and identified in the spring.
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