Entry 1 sense Webster, 1913 Agronomist /əg-rän'-əm-ĭst/ · A·gron·o·mist · IPA /əˈɡɹɑːnəmɪst/ 01 n. One versed in agronomy; a student of agronomy. 1. One versed in agronomy; a student of agronomy.