Definition of Mantell, Gideon Algernon in English:
Mantell, Gideon Algernon
proper nounmanˈtɛl
(1790–1852), English geologist. Mantell is best known as the first person to recognize dinosaur remains as reptilian. In 1825 he published a description of the teeth of a ‘giant fossil lizard’ which he named Iguanodon.