1. alterations or transformations that are clearly visible, observable, or perceptible to the senses
There have been noticeable changes in the company's performance this quarter.
Houve mudanças notáveis no desempenho da empresa neste trimestre.
2. differences that are significant enough to be recognized or detected without difficulty
We observed noticeable changes in the patient's health after the treatment.
Observamos mudanças notáveis na saúde do paciente após o tratamento.