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chalaza
[ kuh-ley-zuh ]
noun
, plural cha·la·zas, cha·la·zae [k, uh, -, ley, -zee].
- 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.
chalaza
/ kəˈleɪzə /
noun
- 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
chalaza
/ kə-lā′zə /
, Plural chalazae kə-lā′zē
- 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.
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Derived Forms
- chaˈlazal, adjective
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Other Words From
- cha·lazal cha·la·zi·an [k, uh, -, ley, -zee-, uh, n], adjective
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Word History and Origins
Origin of chalaza1
1695–1705; < New Latin < Greek: hail, lump
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Word History and Origins
Origin of chalaza1
C18: New Latin, from Greek: hailstone
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Example Sentences
He considers the centre of the hilum as the base, and the chalaza, where it exists, as the natural apex of the seed.
From Project Gutenberg
Seeds larger than Aestivalis, pear-shaped; chalaza roundish.
From Project Gutenberg
Seeds large, usually slightly notched; chalaza rather narrow; raphe a groove.
From Project Gutenberg
Seeds small to very small, slightly notched on top; chalaza depressed, oblong-oval; raphe broad, slightly distinct.
From Project Gutenberg
Seeds two to three of medium size; chalaza oval in shape, slightly distinct; raphe flat, usually inconspicuous, rarely prominent.
From Project Gutenberg
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