monotrematous

English

Etymology 1

Monotremata +‎ -ous

Adjective

monotrematous (not comparable)

  1. (zoology) Of or pertaining to the Monotremata or monotremes.
    Synonym: monotremous

Adjective

monotrematous (not comparable)

  1. (ichthyology) Of the olfactory organ of a fish, having a single opening from which water flows in and out.
    • 2005, Klaus Reutter, Fish Chemosenses, page 23:
      The anatomy of the olfactory organ of Belone belone differs clearly from so-called monotrematous olfactory organs.
    • 2006, Sara Ostlund-Nilsson, Biology of the Three-Spined Stickleback, page 200:
      Three-spined sticklebacks, similar to their Spinachia cousins, are monotrematous, that is, each olfactory organ has only a single naris.
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