1. A reference point or standard that is unclear, imprecise, or open to multiple interpretations, making it difficult to establish a definitive baseline or comparison
The study's ambiguous reference point made it difficult to measure progress accurately.
O ponto de referência ambíguo do estudo dificultou medir o progresso com precisão.
2. In linguistics or grammar, a pronoun or other referential element whose antecedent is unclear or could refer to multiple nouns
The sentence contains an ambiguous reference point because 'it' could refer to either object.
A sentença contém um ponto de referência ambíguo porque 'isso' poderia se referir a qualquer um dos objetos.