ridley
1 Americannoun
plural
ridleys-
Also called bastard turtle. Also called bastard ridley,. Also called Atlantic ridley,. a gray sea turtle, Lepidochelys kempii, of the Atlantic and Gulf coasts of North America, about 24 inches (61 centimeters) long, previously thought to be a hybrid of the loggerhead and green turtles: an endangered species.
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Also called Pacific ridley. Also called olive ridley,. an olive-colored sea turtle, Lepidochelys olivacea, similar to L. kempii, inhabiting tropical waters of the Indian, Pacific, and South Atlantic Oceans: threatened or endangered throughout its range.
noun
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Nicholas, c1500–55, English bishop, reformer, and martyr.
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a town in SE Pennsylvania, near Philadelphia.
noun
Etymology
Origin of ridley
First recorded in 1895–1900; of undetermined origin
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Kemp's ridley sea turtles rank among the most endangered sea turtle species on the planet.
From Science Daily • Feb. 5, 2026
Kemp's ridley turtles are critically endangered, with only about 7,000 females thought to exist.
From BBC • Mar. 25, 2025
While collecting data on olive ridley sea turtles, she and her colleagues would routinely lift the creatures up onto their boat for examination.
From National Geographic • Dec. 12, 2023
Two of the turtles are green sea turtles, and the third is a Kemp’s ridley turtle, aquarium officials said in a news release.
From Seattle Times • Oct. 27, 2023
Kemp's ridley, with a triangular-shaped head and a slightly hooked beak, is primarily found in the Gulf of Mexico.
From Reuters • Sep. 28, 2023
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.