Definition of chorion in English:

chorion

noun ˈkɔːrɪənˈkɔriˌɑn

Embryology

The outermost membrane surrounding an embryo of a reptile, bird, or mammal. In mammals it contributes to the formation of the placenta.
〔胚〕绒毛膜，卵壳
Example sentencesExamples
- Care was exercised not to separate the amniotic sac into its components, the chorion and amnion.
- Each embryo is surrounded, from exterior to interior, by the chorion, the vitelline membrane and the embryonic membrane.
- A needle was used to roll the embryo out of the chorion.
- Together with part of the chorion, these membranes make up the placenta, which physically attaches the embryo to the uterine wall of its mother.
- In insects, the genes that encode the proteins of the egg membrane, the chorion, become amplified in the surrounding follicle cells.

Derivatives

chorionic

adjective ˌkɒrɪˈɒnɪkˌkɔriˈɑnɪk

Embryology

Lesions that were frequently coexistent in HEV-affected placentas included villitis of unknown etiology, chorionic thrombi, villous fibrosis, erythroblastosis, and primary infarcts.
Example sentencesExamples
- If chorionic villi are absent, ectopic pregnancy is likely.
- These authors found ultrastructural evidence of altered endothelial and smooth muscle cells within chorionic vessels exhibiting HEV-like lesions.
- Amniotic fluid, chorionic villi, or fetal serum can be tested for evidence of West Nile virus infection.
- Triple screening should not replace amniocentesis or chorionic villous sampling in pregnancies at high risk for trisomy 21.

Origin

Mid 16th century: from Greek khorion.

Definition of chorion in US English:

chorion

nounˈkôrēˌänˈkɔriˌɑn

Embryology

The outermost membrane surrounding an embryo of a reptile, bird, or mammal. In mammals (including humans), it contributes to the formation of the placenta.
〔胚〕绒毛膜，卵壳
Example sentencesExamples
- Together with part of the chorion, these membranes make up the placenta, which physically attaches the embryo to the uterine wall of its mother.
- In insects, the genes that encode the proteins of the egg membrane, the chorion, become amplified in the surrounding follicle cells.
- A needle was used to roll the embryo out of the chorion.
- Each embryo is surrounded, from exterior to interior, by the chorion, the vitelline membrane and the embryonic membrane.
- Care was exercised not to separate the amniotic sac into its components, the chorion and amnion.

Origin

Mid 16th century: from Greek khorion.

单词	chorion
释义	Definition of chorion in English: chorion noun ˈkɔːrɪənˈkɔriˌɑn Embryology The outermost membrane surrounding an embryo of a reptile, bird, or mammal. In mammals it contributes to the formation of the placenta. 〔胚〕绒毛膜，卵壳 Example sentencesExamples Care was exercised not to separate the amniotic sac into its components, the chorion and amnion. Each embryo is surrounded, from exterior to interior, by the chorion, the vitelline membrane and the embryonic membrane. A needle was used to roll the embryo out of the chorion. Together with part of the chorion, these membranes make up the placenta, which physically attaches the embryo to the uterine wall of its mother. In insects, the genes that encode the proteins of the egg membrane, the chorion, become amplified in the surrounding follicle cells. Derivatives chorionic adjective ˌkɒrɪˈɒnɪkˌkɔriˈɑnɪk Embryology Lesions that were frequently coexistent in HEV-affected placentas included villitis of unknown etiology, chorionic thrombi, villous fibrosis, erythroblastosis, and primary infarcts. Example sentencesExamples If chorionic villi are absent, ectopic pregnancy is likely. These authors found ultrastructural evidence of altered endothelial and smooth muscle cells within chorionic vessels exhibiting HEV-like lesions. Amniotic fluid, chorionic villi, or fetal serum can be tested for evidence of West Nile virus infection. Triple screening should not replace amniocentesis or chorionic villous sampling in pregnancies at high risk for trisomy 21. Origin Mid 16th century: from Greek khorion. Definition of chorion in US English: chorion nounˈkôrēˌänˈkɔriˌɑn Embryology The outermost membrane surrounding an embryo of a reptile, bird, or mammal. In mammals (including humans), it contributes to the formation of the placenta. 〔胚〕绒毛膜，卵壳 Example sentencesExamples Together with part of the chorion, these membranes make up the placenta, which physically attaches the embryo to the uterine wall of its mother. In insects, the genes that encode the proteins of the egg membrane, the chorion, become amplified in the surrounding follicle cells. A needle was used to roll the embryo out of the chorion. Each embryo is surrounded, from exterior to interior, by the chorion, the vitelline membrane and the embryonic membrane. Care was exercised not to separate the amniotic sac into its components, the chorion and amnion. Origin Mid 16th century: from Greek khorion.
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