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单词 chalaza
释义

chalaza

enUK

cha·la·za

C0227600 (kə-lā′zə, -lăz′ə)n. pl. cha·la·zae (-zē) or cha·la·zas 1. Biology One of two spiral bands of tissue in an egg that connect the yolk to the lining membrane at either end of the shell.2. Botany The region of an ovule that is opposite the micropyle, where the integuments and nucellus are joined.
[Greek khalaza, hard lump, hailstone.]
cha·la′zal adj.

chalaza

(kəˈleɪzə) n, pl -zas or -zae (-ziː) 1. (Zoology) one of a pair of spiral threads of albumen holding the yolk of a bird's egg in position2. (Botany) the basal part of a plant ovule, where the integuments and nucellus are joined[C18: New Latin, from Greek: hailstone] chaˈlazal adj

cha•la•za

(kəˈleɪ zə)

n., pl. -zas, -zae (-zē). 1. one of the two albuminous twisted cords fastening an egg yolk to the shell membrane. 2. the point of an ovule or seed where the integuments are united to the nucellus. [1695–1705; < New Latin < Greek: hail, lump] cha•la′zal, adj.
Thesaurus
Noun1.chalaza - basal part of a plant ovule opposite the micropyle; where integument and nucellus are joinedovule - a small body that contains the female germ cell of a plant; develops into a seed after fertilizationplant part, plant structure - any part of a plant or fungus
2.chalaza - one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shellegg - animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes; especially the thin-shelled reproductive body laid by e.g. female birdsanimal tissue - the tissue in the bodies of animals
Translations
chalaza

Chalaza

enUK

chalaza

[kə′lāz·ə] (botany) The region at the base of the nucellus of an ovule; gives rise to the integuments. (cell and molecular biology) One of the paired, spiral, albuminous bands in a bird's egg that attach the yolk to the shell lining membrane at the ends of the egg.

Chalaza

 

the basal part of the ovule where the seed stalk attaches the ovule to the placenta.

chalaza

enUK

cha·la·za

(kă-lā'ză), 1. Synonym(s): chalazion2. Suspensory ligament of the yolk in a bird's egg. [G. hail; a small tubercle, a sty (Galen)]

chalaza

(kə-lā′zə, -lăz′ə)n. pl. chala·zae (-zē) or chala·zas 1. Biology One of two spiral bands of tissue in an egg that connect the yolk to the lining membrane at either end of the shell.2. Botany The region of an ovule that is opposite the micropyle, where the integuments and nucellus are joined.
cha·la′zal adj.

chalaza

  1. the basal part of the OVULE of a flowering plant to which the FUNICLE is attached, and through which the pollen tube sometimes enters the ovule prior to fertilization.
  2. one of an opposite pair of spiral bands in the white of a bird's egg which suspend the yolk within the shell to prevent it from being damaged.

chalaza

enUK
  • noun

Words related to chalaza

noun basal part of a plant ovule opposite the micropyle

Related Words

  • ovule
  • plant part
  • plant structure

noun one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell

Related Words

  • egg
  • animal tissue
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更新时间:2025/2/7 3:34:47