Category:Chalaza

Cha*la"za, n.; pl. E. Chalazas, L. Chalazæ. Etym: [NL., fr. Gr.

1. (Bot.)

Defn: The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.

2. (Biol.)

Defn: A spiral band of thickened albuminous substance which exists in the white of the bird's egg, and serves to maintain the yolk in its position; the treadle.