noun. the epithelial tissue of the endometrium.
- epithelial tissue
Example sentences of the word decidua
1. Noun, singular or mass
The mucus membrane lining the uterus is known as a decidua once it is implanted with a fertilized egg.
2. Verb, 3rd person singular present
Growing best in cool, northern latitudes, the weeping larch (Larix decidua "Pendula") is a uniquely needled conifer that drops its leaves in autumn.