pseudopodium Syllabification: (pseu·do·po·di·um)Pronunciation: /ˌso͞odəˈpōdēəm/Definition of pseudopodium noun (plural pseudopodia /-ˈpōdēə/) Biology a temporary protrusion of the surface of an ameboid cell for movement and feeding. Origin: mid 19th century: modern Latin, from pseudo- + podiumpseudopodium in other Oxford dictionaries Definition of pseudopodium in the British & World English dictionary