dyad

views updated May 29 2018

dyad In genetics, one of the products of the disjunction of the tetrads at the first meiotic division, contained in the nuclei of secondary gametocytes.

A Dictionary of Plant Sciences MICHAEL ALLABY

dyad

views updated May 11 2018

dyad In genetics, one of the products of the disjunction of the tetrads at the first meiotic division, contained in the nuclei of secondary oocytes and spermatocytes.

A Dictionary of Zoology MICHAEL ALLABY

dyad

views updated May 23 2018

dyad The dyad, a group of two members, is the smallest possible social group: if one person opts out the group ceases to exist. Two people can form an intimacy not found in larger groups, but the dyad also involves other basic elements of social exchange, such as rivalry, reciprocity, and power. See also TRIAD.

A Dictionary of Sociology GORDON MARSHALL

dyad

views updated May 18 2018

dyad number two. XVII. — late L. dyas, dyad- — Gr. duás, duad-, f. dúo TWO; see -AD.

The Concise Oxford Dictionary of English Etymology T. F. HOAD

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