Definition of petromyzontid in English:

petromyzontid

noun

Zoology
  • A fish of the family Petromyzontidae; a lamprey.

Origin

Late 19th century; earliest use found in Johnson's New Universal Cyclopedia. From scientific Latin Petromyzontidae, family name from Petromyzont- + -idae.

Pronunciation

petromyzontid

/ˌpɛtrə(ʊ)mʌɪˈzɒntɪd/