Source:http://linkedlifedata.com/resource/umls/id/C0282222
MSH: Compounds that provide LUBRICATION between surfaces in order to reduce FRICTION. They are typically LIPIDS, and include lipophilic lotions, but not EYEDROPS which are aqueous, nor SURFACE-ACTIVE AGENTS which are amphiphilic surfactants.,NCI: An oily or slippery substance.