zona pellucida

[ZOH-nuh puh-LOO-suh-duh]
nounfemininepl: zonas pellucidas
zona pelúcida
1. A transparent, protein-rich membrane surrounding the oocyte and early embryo in mammals, serving as a barrier and providing structural support during early development
The zona pellucida remains intact until the blastocyst is ready to implant in the uterine wall.
A zona pelúcida permanece intacta até que o blastocisto esteja pronto para se implantar na parede uterina.
2. In assisted reproductive technology, the structure that may be breached during embryo biopsy or hatching procedures
During IVF procedures, the embryologist may perform assisted hatching to help the embryo break through the zona pellucida.
Durante procedimentos de FIV, o embriologista pode realizar a eclosão assistida para ajudar o embrião a romper a zona pelúcida.
This is specialized medical and reproductive biology terminology used universally in clinical and academic settings across Brazil, Portugal, and the United States. The term is typically used by fertility specialists, embryologists, and reproductive endocrinologists. It is not colloquial language and appears primarily in medical literature, fertility clinic documentation, and academic research. Understanding this term is essential for individuals undergoing fertility treatments or studying reproductive medicine.
Synonyms / Sinônimos
zona radiataegg membraneembryonic membrane

Regional Variations

General Brazilian
zona pelúcida
Standard medical and scientific terminology used in fertility clinics and academic institutions
Portugal
zona pelúcida
Used identically in Portuguese medical and reproductive health contexts
United States
zona pellucida
Retained Latin terminology in English-language medical and scientific literature

Related Words

blastocystoocyteembryozona hatchingfertilityreproductive biologyassisted reproduction
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