chalaza
noun
one of the two albuminous twisted cords which fasten an egg yolk to the shell membrane.
The grammatical form denoting more than one person, place, thing, or idea.
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A pair of fibrous strands called chalazae anchor the yolk inside the egg, and Geary figured that sundering them would allow the yolk to float to the center.
From New York Times ● Oct. 14, 2012