Chalaza Cha*la"za, n.; pl. E. {Chalazas}, L. {Chalaz[ae]}. [NL., fr. Gr. ? hail, pimple.] 1. (Bot.) The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus. [1913 Webster]

2. (Biol.) A spiral band of thickened albuminous substance which exists in the white of the bird's egg, and serves to maintain the yolk in its position; the treadle. [1913 Webster]

The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • chalazae — n. transparent albuminose twisted strands which attach the egg yolk to the shell membrane (Zoology); base of an ovule across the micropyle to which the end of the funicle is attached (Botany) …   English contemporary dictionary

  • Халазы — (Chalazae seu Grandines) части белка птиц, именно того слоя, который при лежит непосредственно к желтку, образуя около него подобия оболочки (membrana Chalazifera). Эта оболочка на полюсах яйца вытягивается в два спирально закрученных (в… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

  • Chalaza — The chalaza (  /kəˈl …   Wikipedia

  • Яйцо — (ovum) или женская половая клетка в ее окончательно сформированном виде Яйцо при созревании у большинства Metazoa окружается слоем клеток, образующих кругом него оболочку или фолликулу и называемых фолликулярными. Но такого слоя может и не быть.… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

  • egg — egg1 eggless, adj. eggy, adj. /eg/, n. 1. the roundish reproductive body produced by the female of certain animals, as birds and most reptiles, consisting of an ovum and its envelope of albumen, jelly, membranes, egg case, or shell, according to… …   Universalium

  • chalaza — noun (plural chalazae or zas) Etymology: New Latin, from Greek, hailstone Date: circa 1704 1. either of two spiral bands in the white of a bird s egg that extend from the yolk and attach to opposite ends of the lining membrane see egg… …   New Collegiate Dictionary

  • Oviduct — In non mammalian vertebrates, the passageway from the ovaries to the outside of the body is known as the oviduct. The eggs travel along the oviduct. These eggs will either be fertilized by sperm to become a zygote, or will degenerate in the body …   Wikipedia

  • Egg yolk — Not to be confused with yoke. An intact yolk surrounded by egg white An egg yolk is a part of an egg which feeds the developing embryo. The egg yolk is suspended in the egg white (known alternatively as albumen or glair/glaire) by one or two… …   Wikipedia

  • Egg (food) — Chicken egg redirects here. For the causality dilemma, see Chicken or the egg. On the left a chicken egg, the egg most commonly e …   Wikipedia

  • Безногие земноводные — или червяковые (Apoda s. Gymnophina) см. табл. Безногие Гады; червеобразные, лишенные конечностей амфибии с двояковогнутыми позвонками и (у двух родов этой группы) мелкими чешуйками на коже. Безногие гады (Apoda s. Gymnophiona). Рис. 1. Червяга… …   Энциклопедический словарь Ф.А. Брокгауза и И.А. Ефрона

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