amphibious assault is a noun meaning "an amphibious operation attacking a land base that is carried out by troops that are landed by naval ships". It carries one recorded sense.
an amphibious operation attacking a land base that is carried out by troops that are landed by naval ships
Definitions, synonyms and semantic relations for amphibious assault come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.