hyponome

English

Etymology

From Ancient Greek ὑπονομή (huponomḗ, “underground passage”).

Noun

hyponome (plural hyponomes)

1. (zoology) A tubular organ of a cephalopod, used to expel water.
   • 2022, Thomas Halliday, Otherlands, Penguin, published 2023, page 243:

     Ordinarily, it swims forward, but the hyponome can give an emergency spritz, sending the hydrodynamic cone floating backwards at speed with a powerful jet through long thin streamers of brown seaweed and clouds of scattering shrimp.

Derived terms

• hyponomic