Entry 1 sense Webster, 1913 Horticulture /hôr'-tĭk-ŭlˌ-chẽr/ · Hor·ti·cul·ture · IPA /ˈhɔɹ.tɪˌkʌl.t͡ʃɚ/ 01 n. The cultivation of a garden or orchard; the art of cultivating gardens or orchards. 1. The cultivation of a garden or orchard; the art of cultivating gardens or orchards.