noun🔗ShareHypocotyleIn plants with seeds, that portion of the embryo or seedling between the root and cotyledons."The young bean plant's hypocotyl arched upwards, pulling the cotyledons out of the soil and into the sunlight. "L'hypocotyle de la jeune plante de haricot s'est courbé vers le haut, tirant les cotylédons hors du sol et vers la lumière du soleil.plantbiologyseedpartstructurevegetablenaturescienceChat with AIVocabulary GamePractice Reading