ria From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounA submergent coastal landform, often known as a drowned river valley Related wordsSynonymsestuaryfjordcreekstreamletorst3riorayariedceeirinletdrimrsliberiarheaAssociatedriuvitbalhistarbpraiabahiabragaespportoastroRhymesideastriaaseaureadyspneagallerialogophiliadiarrheagonorrheadiarrhoea References Wiktionary — ria Wikipedia — ria