orca

noun

or·​ca ˈȯr-kə 

plural orcas or orca

: a relatively small toothed whale (Orcinus orca of the family Delphinidae) that is black above with white underparts and white oval-shaped patches behind the eyes : killer whale

Orcas are … the most agile and streamlined of the cetaceans. Found throughout the world, they are intelligent, social, and matriarchal.

—Marguerite Holloway

At the end of the food chain sustained by the krill is the orca … a spectacular animal patterned in black and white, that hunts in groups of up to thirty or forty, feeding on penguins, porpoises and seals.

—John Vandenbeld

There they were, wild orcas. Adrenaline rushed through my body, but I clung to the dock. I knew nothing of these waters or this northern wilderness.

—Alexandra Morton

… nowhere in the world are orca easier to see than on Puget Sound, where new whale-watching cruises bring you close to one of the few resident populations.

—Sunset

Examples of orca in a Sentence

Recent Examples on the Web

Frosty is believed to be leucistic, which means the orca has reduced pigmentation but not a complete lack like animals with albinism, according to Sky Angel Drone and the National Park Service. —Paloma Chavez, Sacramento Bee, 15 Jan. 2025

Her newest calf was spotted on December 20 in Washington state’s Puget Sound, but by New Year’s Eve, scientists confirmed the baby orca had died. —Ashley Strickland, CNN, 12 Jan. 2025

The 2025 innovator award will honor Daniel Alarcón, a Peruvian-American journalist and novelist, for his work on The Good Whale (nominated for podcast of the year), which revisits the life of Keiko, the orca who gained fame as the star of the 1993 film Free Willy. —Paul Grein, Billboard, 7 Jan. 2025

Despite occasional good salmon returns, long-term declines have pushed the orcas to the edge of viability, Weiss noted. —Christine Clarridge, Axios, 7 Jan. 2025

Word History

Etymology

borrowed from New Latin, a genus name, earlier a specific epithet (Delphinus orca, Linnaeus), going back to Latin, "a marine mammal, probably Risso's dolphin," borrowed (perhaps via Etruscan) from Greek oryg-, óryx "kind of marine mammal" — more at oryx

Note: The Roman grammarian Sextus Pompeius Festus assumed that the form of the Latin word reflected a different word orca, "kind of narrow-necked earthenware vessel," from the animal's supposed resemblance to the vase.

First Known Use

1726, in the meaning defined above