dyad

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dy·ad

 (dī′ăd′, -əd)
n.
1. Two individuals or units regarded as a pair: the mother-daughter dyad.
2. Biology One pair of homologous chromosomes resulting from the division of a tetrad during meiosis.
3. Mathematics
a. A function that draws a correspondence from any vector u to the vector (v·u)w and is denoted vw, where v and w are a fixed pair of vectors and v·u is the scalar product of v and u. For example, if v = (2,3,1), w = (0,-1,4), and u = (a,b,c), then the dyad vw draws a correspondence from u to (2a + 3b + c)w.
b. A tensor formed from a vector in a vector space and a linear functional on that vector space.
adj.
Made up of two units.
[From Greek duas, duad-, from duo, two; see dwo- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

dyad

(ˈdaɪæd)
n
1. (Mathematics) maths an operator that is the unspecified product of two vectors. It can operate on a vector to produce either a scalar or vector product
2. (Chemistry) an atom or group that has a valency of two
3. a group of two; couple
[C17: from Late Latin dyas, from Greek duas two, a pair]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

dy•ad

(ˈdaɪ æd)

n.
1. a group of two; couple; pair.
2. the double chromosomes resulting from the separation of the four chromatids of a tetrad.
3. an element, atom, or group having a valence of two.
4. Math. two vectors with no symbol connecting them, usu. considered as an operator.
5.
a. two people involved in an ongoing relationship or interaction.
b. the relationship or interaction itself.
adj.
6. of two parts; dyadic.
[1665–75; < Greek dyad-, s. of dyás pair <dý(o) two]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.dyad - two items of the same kinddyad - two items of the same kind    
couplet, distich, duad, duet, duo, twain, twosome, brace, pair, span, yoke, couple
fellow, mate - one of a pair; "he lost the mate to his shoe"; "one eye was blue but its fellow was brown"
2, II, two, deuce - the cardinal number that is the sum of one and one or a numeral representing this number
doubleton - (bridge) a pair of playing cards that are the only cards in their suit in the hand dealt to a player
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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A total of 118 parent-adolescent dyads were eligible and randomly assigned to either the sexual health intervention (38 dyads), the alcohol prevention intervention (40 dyads), or control (40 dyads).
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They were randomly assigned to 16 dyads, in which one member was a confederate.
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Award-winning Lebanese painter Annie Kurkdjia recently held an exhibition in Albareh Art Gallery called Enchained Dyads. Kurkdjian holds a degree in fine arts from the Lebanese University and degrees in psychology and theology from the Lebanese University and St.
ENCHAINED DYADS Albareh Art Gallery
Consequently, we examined seven triads (with 150-510 ICBMs and 8-12 SSBNs) and four bomber-SSBN dyads (with 10-18 SSBNs) in the context of a major nuclear war against an adversary with a large and fairly accurate inventory of nuclear weapons.
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Participants were dyads (mother and child), including black and white women with at least 1 prenatal 25 (OH)D) level, had a non-low-birthweight child born at least 36 weeks estimated gestational age, and had a 3-year study visit that included respiratory and atopic disease assessment.
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Four dyads comprising a person with strokeinduced aphasia and an enrolled nurse participated in the present study; see Table 1.
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Yes/No(Y/N) effect was determined for specific combination dyads, which there were significant differences in body weight at tagging, but no difference in body weight at harvesting.
A Compensatory Growth like Analysis of Common Carp Cyprinus carpio L. among Different Combinations in Full Diallel Crossing
Participants with similar entry skills were assigned to one of three dyads with consideration of each child's availability; therefore, participants were not randomly assigned to groups.
Increasing social behaviors in young children with social-communication delays in a group arrangement in preschool

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