One of the mysteries of the English language finally explained.
(in a bird's egg) each of two twisted membranous strips joining the yolk to the ends of the shell.
- ‘In sections of caryopses, greenish yellow fluorescence was observed in the cell walls of the chalaza and the outer layers of the nucellar projection.’
- ‘In wheat, evidence was found that a barrier occurred in the chalaza, a small zone of cells between the maternal vascular tissue and the nucellus.’
- ‘The chalaza in a duck egg is not as noticeable as it is in a chicken egg and the white is more transparent with less yellow coloring.’
Early 18th century: modern Latin, from Greek khalaza ‘small knot’.
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