genus Phragmipedium ge·nusph·rag·mipedium uncommon noun 1. pressure that keeps oil on the moving parts of an internal-combustion engine SynonymsPhragmipediumgenus Phragmipedium Related words Broader terms monocot genus Parts Orchidaceae WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.