Malaxis ophioglossoides ma·la·xi·sophioglossoides uncommon noun 1. North American orchid having a solitary leaf and flowers with threadlike petals Synonymsgreen adder's mouthMalaxis-unifoliaMalaxis ophioglossoides Related words Broader terms orchid Parts Malaxis WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.