# trophoblast

> English word · Noun · IPA /ˈtɹɒfə(ʊ)blɑːst/

## Definitions
1. The membrane of cells that forms the wall of a blastocyst during early pregnancy, providing nutrients to the embryo and later developing into part of the placenta.

## Etymology
From tropho- + -blast.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/trophoblast