Definition of zona pellucida in English:
noun (plural zonae pellucidaeˈzōˌnē pəˈlo͞osəˌdēˈzōˌnī pəˈlo͞osəˌdī)Anatomy & Zoology
The thick transparent membrane surrounding a mammalian ovum before implantation.
- 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 secondary oocyte and the polar body remain surrounded by the zona pellucida and the cumulus oophorus.
Mid 19th century: from Latin, literally 'pellucid girdle'.
Definition of zona pellucida in:
- British & World English dictionary
What do you find interesting about this word or phrase?
Comments that don't adhere to our Community Guidelines may be moderated or removed.
Most popular in the US
Most popular in the UK
Most popular in Canada
Most popular in Australia
Most popular in Malaysia
Most popular in Pakistan