meaning of chalaza
1. The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.
2. A spiral band of thickened albuminous substance which exists in the white of the birds egg, and serves to maintain the yolk in its position; the treadle.
3. one of two spiral bands of tissue connecting the egg yolk to the enclosing membrane at either end of the shell
Related Words
chalaza | chalazae | chalazal | chalazas |