noun Ar·gen·ti·no·sau·rus \ˌär-jən-¦tē-nə-¦sȯr-əs\

Definition of Argentinosaurus

  1. 1 :  a genus of very large sauropod dinosaurs containing a single known species (Argentinosaurus huinculensis) that lived during the Cretaceous period and had a massive body with a very long neck These seven vertebrae belonged to Argentinosaurus, a long-necked vegetarian dinosaur, or sauropod, that may have outweighed other giants by 40 metric tons. — Tim Appenzeller, Science, 16 Dec. 1994

  2. 2 argentinosaurus or argentinosaur \ˌär-jən-ˈtē-nə-ˌsȯr\ play plural argentinosauruses or argentinosaurs :  a dinosaur of the genus Argentinosaurus This was the year news broke of ongoing excavation of the biggest dinosaur found to date: argentinosaurus, an apatosaurus-looking creature weighing 100 tons. — Bill Dietrich, Seattle Times, 26 Dec. 1995 This family included argentinosaur, thought to be the largest animal ever to walk the Earth … — Advocate (Baton Rouge, Louisiana), 28 Sept. 2001 The only fossil specimen for this genus was found in Argentine Patagonia and is one of the largest dinosaurs ever discovered.

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Origin and Etymology of argentinosaurus

borrowed from New Latin, from Argentina, country in South America + -o- -o- + -saurus -saurus

First Known Use: 1994

Seen and Heard

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a trip made at another's expense

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