noun, plural cha·la·zas, cha·la·zae [kuh-ley-zee] /kəˈleɪ zi/.
- Zoology. one of the two albuminous twisted cords which fasten an egg yolk to the shell membrane.
- Botany. the point of an ovule or seed where the integuments are united to the nucellus.
noun plural -zas or -zae (-ziː)
- one of a pair of spiral threads of albumen holding the yolk of a bird’s egg in position
- the basal part of a plant ovule, where the integuments and nucellus are joined
Plural chalazae (kə-lā′zē) chalazas
- One of two spiral bands of tissue in an egg that connect the yolk to the lining membrane at either end of the shell.
- The region of a plant ovule that is opposite the micropyle, where the integuments and nucellus are joined.