petromyzon
noun
pet·ro·my·zon
ˌpe‧trōˈmīˌzän
1
capitalized : a genus (the type of the family Petromyzontidae) of cyclostomes comprising the typical lampreys
2
plural -s : any cyclostome of the genus Petromyzon
Word History
Etymology
New Latin Petromyzont-, Petromyzon, from petr- + -myzont-, -myzon -myzon