dyad


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dy·ad

(dī'ad),
1. A pair. Synonym(s): diad (2)
2. In chemistry, a bivalent element, molecule, or ion.
3. Two people in an interactional situation, for example, patient and therapist, husband and wife.
4. The double chromosome resulting from division in meiosis.
5. Two units treated as one.
6. A pair of cells resulting from the first meitotic division.
7. The transverse tubule and a terminal cisterna in cardiac muscle cells.
[G. dyas, the number two, duality]

dyad

(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.

dyad

Psychiatry A 2-person relationship–eg, a therapeutic relationship between doctor and Pt in psychotherapy. See Folie á dieux. Cf Shared delusion.

dy·ad

(dī'ad)
1. A pair.
Synonym(s): diad (2) .
2. chemistry A bivalent element.
3. Two people in an interactional situation, e.g., patient and therapist, husband and wife.
4. The double chromosome resulting from the splitting of a tetrad during meiosis.
[G. dyas, the number two, duality]

dyad

a chromosome consisting of two sister CHROMATIDS joined at their centromere which is produced after DISJUNCTION.
References in periodicals archive ?
Nguyen: Dyad Parallel Testing was created because downtime is not an option.
Chude-Sokei ends the chapter with an extended analysis of the race/technology dyad in the sf genre's DNA from its Victorian beginnings through the lost race tales of proto-science fiction and the early pulp era in America, with a particular focus on Samuel Butler's Erewhon (1872).
The puzzle on the right side of the screen (remote or peer's) was the same as the puzzle solved by the other member of the dyad (working on the other computer).
One graduate student collected data for Participant 1 Dyad and Participant 2 Dyad and another graduate student collected data for Participant 3 Dyad.
(9.) There are at least two ways to improve the survivability of a bomber-SSBN dyad: defenses against small attacks (ballistic or cruise missiles) and a day-to-day enhanced alert posture that keeps the maximum possible number of SSBNs at sea continuously and keeps one bomber base on ground alert at all times.
The design of the dyad to generate the given path can also be formulated by making the displacement equation orthogonal to a set of weighting functions [W.sub.i](x) defined on the same interval ([x.sub.0],[x.sub.n]) as the given path y(x).
In dyad 1 (see Extract 5) the nurse would initiate interaction by asking questions about the resident's experiences and preferences in the routine care activity or, for example, about how he had been since last time they saw each other or about his family.
So the body weight difference observed in one dyad from genetic restricted factor) and compensatory like growth periods (tagging to harvesting, in this process, all individuals were reared in one pond without any different condition, so the motivation of compensatory like growth also comes from the genetic factor).
Data were obtained from the rating of 22 sessions, 11 from each dyad. Altogether, 1009 turns were rated: 370 turns from Dyad 1 (T = 185, C = 185) and 639 turns from Dyad 2 (T = 317, C = 322).
All participants learned to share tokens during dyadic instruction using a PTD procedure (see Figure 5; percentage of unprompted sharing presented for each participant by dyad).
Figure 6 shows the scores on the questionnaire within each dyad. In dyads A, C and D, parents and children have similar attitudes towards APC.
In this model, two parallel lines are used to represent this dyad because literature has documented that the parent-child dyads between each parent and the child contribute differently to the pain experience (Gaughan, Logan, Sethna, & Mott, 2014).