monocot genus mo·no·cot·genus uncommon noun 1. genus of flowering plants having a single cotyledon (embryonic leaf) in the seed Synonymsmonocot genusliliopsid genus Related words Broader terms genus Narrower terms liliid monocot genusJuncusgenus ArumAcorusAglaonemagenus Alocasiagenus Amorphophallusgenus Anthurium Parts Monocotyledones WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.