Definition of Allison tuna in English:

Allison tuna

Pronunciation /ˌalɪs(ə)nz ˈtjuːnə/

noun

(also Alison tuna)
  • The yellowfin tuna, Thunnus albacares; specifically the larger adult with long sickle-shaped fins (formerly regarded as a separate species, Thunnus (or Neothunnus) allisoni).

Origin

1920s; earliest use found in The National Geographic. From the name of James A. Allison, United States entrepreneur and founder of an aquarium at Miami Beach, Florida + tuna, after former scientific Latin name Thunnus allisoni.