from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Lacking a siphon or breathing tube.
  • n. Any mollusk lacking a siphon or breathing tube.

from the GNU version of the Collaborative International Dictionary of English

  • adj. Destitute of a siphon or breathing tube; -- said of many bivalve shells.

from The Century Dictionary and Cyclopedia

  • Not possessing a respiratory tube or siphon: opposed to siphonate; specifically, of or pertaining to the Asiphonata. H. A. Nicholson. Also asiphoniate and esiphonate.


a- +‎ siphonate (Wiktionary)


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