from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. Swimming by means of expansion and contraction.
from the GNU version of the Collaborative International Dictionary of English
- adj. Swimming by the expansion and contraction, or lunglike movement, of the body, or of the disk, as do the medusæ.
from The Century Dictionary and Cyclopedia
- Having the characters of the Pulmograda; swimming by means of alternate contraction and expansion of the body, as if by a kind of respiration, as a jellyfish.
- n. An acaleph of the group Pulmograda; a discophorous hydrozoan.
Latin pulmo a lung + gradi to walk. (Wiktionary)