CHALAZA
\t͡ʃalˈɑːzə], \tʃalˈɑːzə], \tʃ_a_l_ˈɑː_z_ə]\
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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.
By Oddity Software
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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.
By Noah Webster.
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One of the two spiral bands attaching the yolk to the membrane of a bird's egg; the base of the nucellus of an ovule from which the integuments arise.
By Henderson, I. F.; Henderson, W. D.
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A hard, round, transparent tumour, developed in different parts of the body, more especially in the substance of the eyelids. - Also, the Cicatricula of the egg. Generally, however, in the language of ovologists, the chalazae or poles are, in the egg of the bird, the more dense internal layer of the albumen, which adheres to the yolk, and is continued, in the form of two spirally twisted bands, towards the extremities of the egg. The twisting is considered to be produced by the revolving motion of the egg in its descent through the oviduct.
By Robley Dunglison
By Willam Alexander Newman Dorland
Word of the day
basidiomycota
- comprises fungi bearing the spores on basidium: Gasteromycetes (puffballs); Tiliomycetes (comprising orders Ustilaginales (smuts) and Uredinales (rusts)); Hymenomycetes (mushrooms; toadstools; agarics; bracket fungi); in some classification systems considered a division of kingdom comprises fungi bearing spores on a basidium; includes Gasteromycetes (puffballs) Tiliomycetes comprising the orders Ustilaginales (smuts) and Uredinales (rusts) Hymenomycetes (mushrooms, toadstools, agarics bracket fungi).