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单词 chalaza
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cha•la•za  (kə lā′zə),USA pronunciation n., pl. -zas, -zae (-zē).USA pronunciation 
  1. Zoologyone of the two albuminous twisted cords which fasten an egg yolk to the shell membrane.
  2. Botanythe point of an ovule or seed where the integuments are united to the nucellus. See diag. under orthotropous. 
  • Greek: hail, lump
  • Neo-Latin
  • 1695–1705;
cha•la′zal, cha•la•zi•an  (kə lā′zē ən),USA pronunciation adj. 
Collins Concise English Dictionary © HarperCollins Publishers::
chalaza /kəˈleɪzə/ n ( pl -zas, -zae / -ziː/)
  1. one of a pair of spiral threads of albumen holding the yolk of a bird's egg in position
Etymology: 18th Century: New Latin, from Greek: hailstone
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