Definition

1. Noun:
   • A large species of tuna (Thunnus thynnus): "bluefin tuna" refers to the largest species of tuna, which can grow to a very large size, inhabiting temperate seas and migrating between polar feeding grounds and tropical breeding areas.
   • The flesh of this fish used as food: "bluefin tuna" also refers to the meat, prized especially for sushi and sashimi, from this very large tuna.

Usage Examples

• Noun (referring to the fish):
  • Conservationists are concerned about the declining population of the Atlantic bluefin tuna.
  • The bluefin tuna is a powerful swimmer that migrates across entire oceans.
• Noun (referring to the meat):
  • The chef prepared a dish of seared bluefin tuna with a ginger sauce.
  • This market sells the highest-grade bluefin tuna for sushi restaurants.

Advanced Usage

• "Bluefin tuna population": refers to the collective number of these fish in a specific area or globally, often discussed in ecological contexts.
  • International agreements aim to manage the sustainable harvest of the bluefin tuna population.
• As a modifier: The term can be used adjectivally before another noun.
  • The bluefin tuna fishery is highly regulated.

Variants and Related Words

• Bluefin (noun): A common shortened form for "bluefin tuna."
  • The auction price for bluefin set a new record.
• Thunnus thynnus (noun): The scientific name for the Atlantic bluefin tuna.
• Pacific bluefin tuna (noun): A related species () found in the Pacific Ocean.

Synonyms

• Giant tuna: A descriptive synonym emphasizing its size.
• Northern bluefin tuna: Another name for the Atlantic species.

Related Phrases

• Bluefin tuna stock: A term used in marine biology and commerce to refer to the population or supply of these fish.
  • Scientists are assessing the current bluefin tuna stock in the Mediterranean.
• Bluefin tuna ban: Refers to prohibitions on fishing or trading this species.
  • The proposed bluefin tuna ban was debated at the conservation summit.

Noun

1. largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics
2. flesh of very large tuna