have recourse to or make an appeal or request for help or information to; "She called on her Representative to help her"; "She turned to her relatives for help"
status established in order of importance or urgency; "...its precedence as the world's leading manufacturer of pharmaceuticals"; "national independence takes priority over class struggle"
(pharmacology) a book containing a compilation of pharmaceutical products with their formulas and methods of preparation; "postexposure prophylaxis is an integral part of the pharmacopeia in preventing severe disease after acute infections"