chalaza

cha·la·za

noun \kə-ˈlā-zə, -ˈlaz-ə\

plural cha·la·zae \-ˌzē\ or cha·la·zas

Definition of CHALAZA

: either of a pair of spiral bands in the white of a bird's egg that extend from the yolk and attach to opposite ends of the lining membrane

Illustration of CHALAZA