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4 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 cha·la·za /kəˈlezə, ˈlæ-/

From: DICT.TW English-Chinese Medical Dictionary 英漢醫學字典

 cha·la·za /kəˈlezə, ˈlæzə/ 名詞

From: Webster's Revised Unabridged Dictionary (1913)

 Cha·la·za n.; pl. E. Chalazas, L. Chalazæ
 1. Bot. The place on an ovule, or seed, where its outer coats cohere with each other and the nucleus.
 2. Biol. 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.

From: WordNet (r) 2.0

      n 1: basal part of a plant ovule opposite the micropyle; where
           integument and nucellus are joined
      2: one of two spiral bands of tissue connecting the egg yolk to
         the enclosing membrane at either end of the shell
      [also: chalazae (pl)]