noun🔗ShareMilibarA non-SI unit of pressure equal to 100 pascals, used primarily to report atmospheric pressure."The weather report said the atmospheric pressure is 1013 millibars, which indicates a typical day. "El informe meteorológico indicó que la presión atmosférica es de 1013 milibares, lo que indica un día típico.weatherphysicsscienceunitChat with AIVocabulary GamePractice Reading