sea urchin
noun
: any of numerous echinoderms (class Echinoidea) that are usually enclosed in thin brittle globular tests covered with movable spines
Example Sentences
Recent Examples on the Web An unusual ocean heat wave several years ago and a disease that killed off a sea urchin predator disrupted the kelp’s ecosystem. 
Ralph Pace, Washington Post, 17 Aug. 2022 Choose a mesmerizing mandala ring, a stunning rainbow ring, or a sea urchin ring. Katarina Avendano, Good Housekeeping, 3 Aug. 2022 Caviar will appear in the first course, truffles will be wheeled out, either sea urchin or lobster is almost guaranteed. New York Times, 5 Apr. 2022 As a keystone species, sea otters help preserve our ever-important kelp forests by controlling the sea urchin population. Matt Pawlik, Los Angeles Times, 4 Aug. 2022 Along with the salmon, tuna, crab, scallops and sea urchin available for purchase, the shop also carried sushi and sashimi for carryout. Tori Latham, Robb Report, 2 Aug. 2022 Adams enjoyed trying new foods in other cultures as well, like sea urchin in Chile, Janis, a physician’s assistant, said. Mike Mavredakis, Hartford Courant, 18 July 2022 And why does the embryo of a marine organism like a sea slug develop differently from that of a sea urchin? David L. Coddon, San Diego Union-Tribune, 7 July 2022 Dinner could be bourbon-gingerade cocktails and sea urchin pasta at Izakaya Meiji, or fresh-shucked oysters and a burger at Party Bar. oregonlive, 5 July 2022 See More
Ralph Pace, Washington Post, 17 Aug. 2022 Choose a mesmerizing mandala ring, a stunning rainbow ring, or a sea urchin ring. Katarina Avendano, Good Housekeeping, 3 Aug. 2022 Caviar will appear in the first course, truffles will be wheeled out, either sea urchin or lobster is almost guaranteed. New York Times, 5 Apr. 2022 As a keystone species, sea otters help preserve our ever-important kelp forests by controlling the sea urchin population. Matt Pawlik, Los Angeles Times, 4 Aug. 2022 Along with the salmon, tuna, crab, scallops and sea urchin available for purchase, the shop also carried sushi and sashimi for carryout. Tori Latham, Robb Report, 2 Aug. 2022 Adams enjoyed trying new foods in other cultures as well, like sea urchin in Chile, Janis, a physician’s assistant, said. Mike Mavredakis, Hartford Courant, 18 July 2022 And why does the embryo of a marine organism like a sea slug develop differently from that of a sea urchin? David L. Coddon, San Diego Union-Tribune, 7 July 2022 Dinner could be bourbon-gingerade cocktails and sea urchin pasta at Izakaya Meiji, or fresh-shucked oysters and a burger at Party Bar. oregonlive, 5 July 2022 See More Word History
First Known Use
1591, in the meaning defined above
Kids Definition
sea urchin
noun
: a small sea animal that is related to the starfish, lives on the sea bottom, and is enclosed in a roundish shell covered with spines that can move