Definition of soft-finned in English:

soft-finned

adjective

Zoology
  • Of a fish: having soft fin rays; (formerly) specifically = malacopterygian.

Origin

Mid 18th century; earliest use found in Chambers's Cyclopaedia. From soft + finned, after scientific Latin Malacopterygii, group name.

Pronunciation

soft-finned

/ˈsɒf(t)fɪnd/