zona pellucida

(redirected from zonae pellucidae)
Also found in: Thesaurus, Medical, Encyclopedia.

zo·na pel·lu·ci·da

 (zō′nə pə-lo͞o′sĭ-də, pĕl-yo͞o′-)
A thick transparent extracellular coat that surrounds the mammalian ovum and is composed of glycoproteins. Spermatozoa bind to the zona pellucida during fertilization.

[New Latin zōna pellūcida : Latin zōna, belt, girdle + Latin pellūcida, feminine of pellūcidus, transparent.]

zo•na pel•lu•ci•da

(ˈzoʊ nə pəˈlu sɪ də, pɛlˈyu-)

n., pl. zo•nae pel•lu•ci•dae (ˈzoʊ ni pəˈlu sɪˌdi, pɛlˈyu-)
a transparent jellylike substance surrounding the ovum of mammals.
Also called zo′na.
[1835–45; < New Latin; see zone, pellucid]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.zona pellucida - thick membrane around the mammalian ovum; can be penetrated by one sperm in the fertilization process; usually remains around the fertilized egg until it is implanted in the wall of the uterus
zona, zone - (anatomy) any encircling or beltlike structure
zona pellucidazone pellucide
References in periodicals archive ?
Mammalian sperm-egg interaction: identification of a glycoprotein in mouse egg zonae pellucidae possessing receptor activity for sperm.
After removing the zonae pellucidae in acid Tyrode solution (pH 2.
Briefly, zonae pellucidae of blastocysts were removed by exposing the embryos in groups of ten to fifteen to acid Tyrode solution, until the zonae pellucidae became wrinkly and dissolved (after about 3 to 5 second).