The Collaborative International Dictionary of English v.0.48:

Gymnophiona \Gym`no*phi"o*na\ (j[i^]m`n[-o]*f[imac]"[-o]*n[.a]),
   n. pl. [NL., fr. Gr. gymno`s naked + 'ofio`neos serpentlike.]
   (Zool.)
   An order of Amphibia, having a long, annulated, snakelike
   body. See Ophiomorpha.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Ophiomorpha \O`phi*o*mor"pha\, n. pl. [NL. See Ophiomorphous.]
   (Zool.)
   An order of tailless amphibians having a slender, wormlike
   body with regular annulations, and usually with minute scales
   imbedded in the skin. The limbs are rudimentary or lacking.
   It includes the caecilians. Called also Gymnophiona and
   Ophidobatrachia.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Gymnophiona
    n 1: an order of amphibians including caecilians [syn:
         Gymnophiona, order Gymnophiona]