Noun mariana islands has 1 sense
  1. Mariana Islands, Marianas, Ladrone Islands - a chain of coral and volcanic islands in Micronesia (including Guam and the Northern Marianas) halfway between New Guinea and Japan; discovered by Magellan in 1521
    --1 is a kind of archipelago
    --1 is a part of Micronesia, Federated States of Micronesia, TT
    --1 has parts: Northern Marianas, Northern Mariana Islands; Guam, GU
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