TROPHOBLAST

Pronunciation (US):

(GB):

 Dictionary entry overview: What does trophoblast mean? 

• TROPHOBLAST (noun)
  The noun TROPHOBLAST has 1 sense:

1. the membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall

  Familiarity information: TROPHOBLAST used as a noun is very rare.

 Dictionary entry details 

• TROPHOBLAST (noun)

Sense 1

Meaning:

The membrane that forms the wall of the blastocyst in early development; aids implantation in the uterine wall

Classified under:

Nouns denoting animals

Context example:

after implantation of the blastocyst in the uterine wall the trophoblast divides into two layers, the chorion and the placenta

Hypernyms ("trophoblast" is a kind of...):

membrane; tissue layer (a pliable sheet of tissue that covers or lines or connects the organs or cells of animals or plants)

Holonyms ("trophoblast" is a part of...):

blastosphere; blastula (early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs)

Derivation:

trophoblastic (of or relating to the trophoblast)

 Context examples 

A rare gestational trophoblastic tumor characterized by the presence of a diffuse cellular infiltrate composed of intermediate trophoblasts and cytotrophoblasts and by the absense of a significant population of syncytiotrophoblasts.

(Placental-Site Gestational Trophoblastic Tumor, NCI Thesaurus)

This allele, which encodes early placenta insulin-like peptide, may be involved in the mediation of both trophoblast development and bone formation.

(INSL4 wt Allele, NCI Thesaurus)

With insulin-like effects in cell growth control that are not mediated by the INSR, INSL4 may play role in trophoblast development, cell proliferation, differentiation, and bone formation.

(Insulin-Like Peptide 4, NCI Thesaurus)

A malignant germ cell tumor that arises from the ovary and is composed of cytotrophoblasts, syncytiotrophoblasts, and extravillous trophoblasts.

(Non-Gestational Ovarian Choriocarcinoma, NCI Thesaurus)

A diverse group of pregnancy-related tumors characterized by excessive proliferation of trophoblasts.

(Gestational trophoblastic tumor, NCI Thesaurus)

A non-neoplastic trophoblastic disorder characterized by the presence of remnants of intermediate trophoblasts in the uterine cavity from a previous pregnancy.

(Placental Site Nodule or Plaque, NCI Thesaurus)

This junctional zone extends at the edge of the placenta to the amino-chorionic membranes where the chorionic laeve trophoblast has intimate contact with decidua tissue.

(Intermediate Type Trophoblastic Cell, NCI Thesaurus)

A malignant neoplasm arising from placental trophoblast cells.

(Choriocarcinoma, NCI Thesaurus/CDISC)

A polygonal, mononucleate cell resembling the cells of the inner layer of the trophoblast, having prominent nucleoli and clear, eosinophilic or basophilic cytoplasm.

(Cytotrophoblastic Cell, NCI Thesaurus)

This protein plays a role in transcriptional activation of genes involved in trophoblast differentiation, gastrulation, and brain development.

(Eomesodermin Homolog, NCI Thesaurus)