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twinned

[twind] /twɪnd/
adjective
1.
born two at one birth.
2.
closely or intimately associated, joined, or united; coupled; paired.
Origin
1600-1610
1600-10; twin1 + -ed2
Related forms
untwinned, adjective

twin1

[twin] /twɪn/
noun
1.
either of two children or animals brought forth at a birth.
2.
either of two persons or things closely related to or closely resembling each other.
3.
4.
Also called twin room. a type of hotel accommodation with twin beds, for occupancy by two persons.
Compare double (def 13).
5.
Also called hemitrope. Crystallography. a compound crystal consisting of two or more parts or crystals definitely oriented each to the other; macle.
6.
Twins, Astronomy, Astrology. the constellation or sign of Gemini.
adjective
7.
being a twin or twins:
twin sisters.
8.
being two persons or things closely related to or closely resembling each other.
9.
being one of a pair; identical:
a twin bracelet; a twin peak.
10.
consisting of two similar parts or elements joined or connected:
a twin vase.
11.
Botany, Zoology. occurring in pairs; didymous.
12.
Crystallography. of the nature of a twin; hemitrope.
13.
twofold or double.
verb (used with object), twinned, twinning.
14.
to bring together in close relationship; pair; couple.
15.
to furnish a counterpart to or a replica of; match.
16.
Informal. to divide or convert into two, parts, similar items, etc.:
The old movie palace will be twinned, making two smaller theaters.
17.
Informal. to link or combine with:
The new grocery store is twinned with a restaurant.
18.
Crystallography. to form into a twin.
19.
Obsolete. to give birth to as twins.
verb (used without object), twinned, twinning.
20.
to give birth to twins.
21.
to be paired or coupled.
Origin
before 900; Middle English; Old English twinn (adj.), getwinn (noun and adj.); akin to Old Frisian twīne, Old Norse tvinnr double, Gothic twaihnai

twin2

[twin] /twɪn/
verb (used with object), verb (used without object), twinned, twinning. Scot.
1.
twine2 .
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for twinned

twin

/twɪn/
noun
1.
  1. either of two persons or animals conceived at the same time
  2. (as modifier) a twin brother See also identical (sense 3), fraternal (sense 3)
2.
  1. either of two persons or things that are identical or very similar; counterpart
  2. (as modifier) twin carburettors
3.
Also called macle. a crystal consisting of two parts each of which has a definite orientation to the other
verb twins, twinning, twinned
4.
to pair or be paired together; couple
5.
(intransitive) to bear twins
6.
(intransitive) (of a crystal) to form into a twin
7.
(intransitive) (archaic) to be born as a twin
8.
(transitive)
  1. to create a reciprocal relation between (two towns in different countries); pair (a town) with another in a different country
  2. (intransitive) (of a town) to be paired with a town in a different country
Derived Forms
twinning, noun
Word Origin
Old English twinn; related to Old High German zwiniling twin, Old Norse tvinnr double
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 twinned
twin
O.E. twinn "consisting of two, twofold, double," probably ultimately from P.Gmc. *twinjaz (cf. O.N. tvinnr, O.Dan. tvinling, Du. tweeling, Ger. zwillung), from PIE *dwisno- (cf. L. bini "two each," Lith. dvynu "twins"), from *dwi- "double," from base *dwo- "two" (see two). The verb meaning "to combine two things closely" is recorded from c.1394. The noun developed from O.E. getwinn "double."
Online Etymology Dictionary, © 2010 Douglas Harper
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twinned in Medicine

twin (twĭn)
n.
One of two offspring born at the same birth. adj.

  1. Being two or one of two offspring born at the same birth.

  2. Consisting of two identical or similar parts; double.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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twinned in Science
twin
  (twĭn)   
  1. One of two offspring born of a single gestation. Identical twins result from the division of a fertilized egg. Fraternal twins result from the fertilization of two separate eggs at the same time.

  2. A crystal structure consisting of two intergrown crystals that are mirror images of each other. Mineral twins can form as result of defective crystal growth in response to stress from rock deformation or during magma cooling.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for twinned

twin

either of two young who are simultaneously born from one mother. Twinning, common in many animals, is of two biological kinds: the one-egg (monozygotic), or identical, type and the two-egg (dizygotic), or fraternal, type. The latter type is more usual and can be thought of simply as a litter of two. In humans, psychological studies of sets of identical twins, since they are genetically identical, have provided much otherwise unobtainable information on the relative effects of genetic endowment and environment. See also multiple birth.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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