Definition of zona pellucida in English:

zona pellucida

nounPlural zonae pellucidaeˌzəʊnə pɪˈluːsɪdəˌzōnə pəˈlo͞osədə

Anatomy Zoology

The thick transparent membrane surrounding a mammalian ovum before implantation.
〔剖，动〕透明带，卵膜
Example sentencesExamples
- The onset of hyperactive movement occurs near the site of fertilization and is crucial for penetrating the egg's zona pellucida.
- At this stage the embryo releases itself from the zona pellucida still surrounding it, and implants into the uterine wall.
- The secondary oocyte and the polar body remain surrounded by the zona pellucida and the cumulus oophorus.
- The scientists drilled through the egg's protective layer, the zona pellucida, removed a plug, and then extracted the DNA and polar body through the hole.
- The embryo must hatch out of the zona pellucida prior to implantation into the uterine wall.

Origin

Mid 19th century: from Latin, literally 'pellucid girdle'.

Definition of zona pellucida in US English:

zona pellucida

nounˌzōnə pəˈlo͞osədə

Anatomy Zoology

The thick transparent membrane surrounding a mammalian ovum before implantation.
〔剖，动〕透明带，卵膜
Example sentencesExamples
- The secondary oocyte and the polar body remain surrounded by the zona pellucida and the cumulus oophorus.
- At this stage the embryo releases itself from the zona pellucida still surrounding it, and implants into the uterine wall.
- The embryo must hatch out of the zona pellucida prior to implantation into the uterine wall.
- The onset of hyperactive movement occurs near the site of fertilization and is crucial for penetrating the egg's zona pellucida.
- The scientists drilled through the egg's protective layer, the zona pellucida, removed a plug, and then extracted the DNA and polar body through the hole.

Origin

Mid 19th century: from Latin, literally ‘pellucid girdle’.

词汇	zona pellucida
释义	Definition of zona pellucida in English: zona pellucida nounPlural zonae pellucidaeˌzəʊnə pɪˈluːsɪdəˌzōnə pəˈlo͞osədə Anatomy Zoology The thick transparent membrane surrounding a mammalian ovum before implantation. 〔剖，动〕透明带，卵膜 Example sentencesExamples The onset of hyperactive movement occurs near the site of fertilization and is crucial for penetrating the egg's zona pellucida. At this stage the embryo releases itself from the zona pellucida still surrounding it, and implants into the uterine wall. The secondary oocyte and the polar body remain surrounded by the zona pellucida and the cumulus oophorus. The scientists drilled through the egg's protective layer, the zona pellucida, removed a plug, and then extracted the DNA and polar body through the hole. The embryo must hatch out of the zona pellucida prior to implantation into the uterine wall. Origin Mid 19th century: from Latin, literally 'pellucid girdle'. Definition of zona pellucida in US English: zona pellucida nounˌzōnə pəˈlo͞osədə Anatomy Zoology The thick transparent membrane surrounding a mammalian ovum before implantation. 〔剖，动〕透明带，卵膜 Example sentencesExamples The secondary oocyte and the polar body remain surrounded by the zona pellucida and the cumulus oophorus. At this stage the embryo releases itself from the zona pellucida still surrounding it, and implants into the uterine wall. The embryo must hatch out of the zona pellucida prior to implantation into the uterine wall. The onset of hyperactive movement occurs near the site of fertilization and is crucial for penetrating the egg's zona pellucida. The scientists drilled through the egg's protective layer, the zona pellucida, removed a plug, and then extracted the DNA and polar body through the hole. Origin Mid 19th century: from Latin, literally ‘pellucid girdle’.
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