tet|rad

tet|rad
tet|rad «TEHT rad», noun.
1. a sum, group, or set of four.
2. Chemistry. an element, atom, or radical with a valence of four.
3. Biology. a group of four chromatids formed in various organisms when a pair of chromosomes splits longitudinally during meiosis.
4. Botany. a group of four cells, as of spores or pollen grains.
[< Greek tetrás, -ádos (a group of) four < tetra- four]

Useful english dictionary. 2012.

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  • tet — al·lo·tet·ra·ploid; ap·a·tet·ic; cen·tet·i·dae; cy·clo·octa·tet·ra·ene; di·e·tet·ic; di·e·tet·i·cal·ly; di·e·tet·ics; ex·ul·tet; fus·tet; mi·gra·tet·ic; mi·gra·tet·ics; moor·tet·ter; mo·tet; mot·tet·to; nepho·tet·tix; oc·tet; or·tet;… …   English syllables

  • rad — am·rad; cha·rad·rii; cha·rad·ri·i·form; cha·rad·ri·i·for·mes; cha·rad·ri·us; col·o·rad·o·ite; con·el·rad; con·rad·son; do·rad; do·rad·i·dae; fa·rad·ic; for·rad; for·rad·er; ir·rad·i·ca·ble; ir·rad·i·cate; ka·me·rad; maa·rad; mac·rad·e·nous;… …   English syllables

  • Rad des Schicksals — Das Tarotblatt enthält die Spielkarten des Tarot. Inhaltsverzeichnis 1 Die Karten der Großen Arcana (auch Trumpfkarten oder Trionfi) 1.1 0 / XXII Der Narr 1.1.1 Darstellung 1.1.2 Deutung …   Deutsch Wikipedia

  • tetrad — tet·rad …   English syllables

  • tetradite — tet·rad·ite …   English syllables

  • tetrad — tet•rad [[t]ˈtɛ træd[/t]] n. 1) a group of four 2) the number four 3) cbl Biol. a group of four chromatids formed by synapsis at the beginning of meiosis • Etymology: 1645–55; < Gk tetrad , s. of tetrás group of four …   From formal English to slang

  • tetrad — 1. A collection of four things having something in common such as a deformity with four features, e.g., Fallot tetralogy. SYN: tetralogy. 2. In chemistry, a quadrivalent element. 3. In heredity, a bivalent ch …   Medical dictionary

  • telluric bismuth — Tetradymite Tet*rad y*mite, n. [Gr. tetra dymos fourfold. So named from its occurrence in compound twin crystals, or fourlings.] (Min.) A telluride of bismuth. It is of a pale steel gray color and metallic luster, and usually occurs in foliated… …   The Collaborative International Dictionary of English

  • Tetrad — Tet rad, n. [L. tetras, adis, Gr. ?, ?: cf. F. t[ e]trade.] 1. The number four; a collection of four things; a quaternion. [1913 Webster] 2. (Chem.) A tetravalent or quadrivalent atom or radical; as, carbon is a tetrad. [1913 Webster] …   The Collaborative International Dictionary of English

  • Tetradic — Tet*rad ic, a. (Chem.) Of or pertaining to a tetrad; possessing or having the characteristics of a tetrad; as, a carbon is a tetradic element. [1913 Webster] …   The Collaborative International Dictionary of English

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