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Webster 1913 Edition
Chalaza
‖
Cha-la′za
,Noun.
pl. E.
Chalazas
, L. Chalazæ
(#)
. [NL., fr. Gr. [GREEK] hail, pimple.]
1.
(Bot.)
The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.
2.
(Biol.)
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.