ˈnəʊtɪs ˈnoʊtɪs əbˈzɝvəns əbˈzɜːvəns ˌɒbzəˈveɪʃ(ə)n ˌɑbzɚˈveɪʃən ɹɪˈflɛkʃən ɹɪˈflɛkʃ(ə)n ˈwɑtʃɪŋ ˈwɒtʃɪŋ the act of observing; taking a patient look the act of making and recording a measurement the act of noticing or paying attention he escaped the notice of the police facts learned by observing he reported his observations to the mayor a remark expressing careful consideration