nocturnality

Science Dictionary
nocturnal   (nŏk-tûr'nəl)  Pronunciation Key 
  1. Occurring at night.

  2. Most active at night. Many animals, such as owls and bats, are nocturnal.

  3. Having flowers that open during the night and close at daylight. Nocturnal plants are often pollinated by moths. Compare diurnal.


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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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