tuna

1 of 2

noun (1)

tu·​na ˈtü-nə 

ˈtyü-

plural tuna or tunas

1

: any of various large vigorous scombroid fishes (as of the genera Euthynnus, Katsuwonus, and especially Thunnus) that are usually dark above and silvery below and include many that are valued as food or sport fishes see albacore, bigeye tuna, bluefin tuna, dogtooth tuna, little tunny, skipjack tuna, yellowfin tuna

2

: the flesh of a tuna used for food

grilled tuna

specifically, sometimes tuna fish : tuna flesh that has been cooked and canned

—often used before another noun

tuna salad

a tuna fish sandwich

tuna

2 of 2

noun (2)

tu·​na ˈtü-nə 

1

: any of various flat-jointed prickly pears (genus Opuntia)

especially : one (O. tuna) of tropical America

2

: the edible fruit of a tuna

Examples of tuna in a Sentence

Recent Examples on the Web

Noun

The wholesale tuna portion of the market moved to Toyosu, but Tsukiji still thrives with shops, restaurants, and the new Uogashi market. —Jessica Kozuka, Travel + Leisure, 12 July 2025

Whether served on lettuce, with crackers, or made into a sandwich, tuna salad is a no-fuss recipe—in a good way. —Jenna Sims, Southern Living, 12 July 2025

In May, a detainee went into anaphylactic shock and ended up intubated in the hospital, the staffer said, because an officer wasn’t paying attention or was new and gave the detainee, who’s allergic to seafood, a tray that contained tuna. —Jenny Jarvie, Los Angeles Times, 20 June 2025

Chicha morada kombucha, made from purple corn, is a perfect partner for the Peruvian classic and namesake dish, causa, with its mashed potatoes hit with aji amarillo paste, then topped with cucumber, avocado and tuna tartare. —Jim Dobson, Forbes.com, 19 June 2025

Word History

Etymology

Noun (1)

American Spanish, alteration of Spanish atún, modification of Arabic tūn, from Latin thunnus, from Greek thynnos

Noun (2)

Spanish, from Taino

First Known Use

Noun (1)

1881, in the meaning defined at sense 1

Noun (2)

circa 1555, in the meaning defined at sense 1

Phrases Containing tuna

• bigeye tuna
• bluefin tuna
• dogtooth tuna
• little tuna
• skipjack tuna
• tuna mayonnaise
• yellowfin tuna

Rhymes for tuna

• kuna
• luna
• calluna
• lacuna
• laguna
• tribuna
• varuna
• vicuna

Kids Definition

tuna

noun

tu·​na

ˈt(y)ü-nə

plural tuna or tunas

1

: any of several mostly large sea fishes (as an albacore or bonito) related to the mackerels and caught for food and sport

2

: the flesh of a tuna especially when canned for use as food

called also tuna fish