onenumeralmasculine/ˈunu/highu·noPortuguesEnglishEspanolFrancaisDefinitionThe first cardinal number; represents unity, singularity.He is the number one on the team.I only need one pencil.antmultiplemanyCommon collocationsnumber oneone and onlyone by oneone at a timeIdiomatic expressionsone by one (individually)one and the same (identical)EtymologyDo latim 'unus'.Related wordsunidadeúnicounificarunanimidade