sos From WikiWord, the free dictionary English Contents DefinitionsRelated wordsReferences DefinitionsnounA syllable used in solfège to represent the fifth note of a major scale. Related wordsSynonymsthenthuslythusindeedtruthfultruein ordersystematicsohsoland soand thenmaydayersraywfaAssociatedlicohombretalongovvidacolipoldistressorphanedtitanicrascatalan References Wiktionary — sos Wikipedia — sos