The Collaborative International Dictionary of English v.0.48:

Formulary \For"mu*la*ry\, a. [Cf. F. formulaire. See Formula.]
   Stated; prescribed; ritual.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Formulary \For"mu*la*ry\, n.; pl. Formularies. [Cf. F.
   formulaire.]
   1. A book containing stated and prescribed forms, as of
      oaths, declarations, prayers, medical formula[ae], etc.; a
      book of precedents.
      [1913 Webster]

   2. Prescribed form or model; formula.
      [1913 Webster]

WordNet (r) 3.0 (2006):

formulary
    adj 1: of or relating to or of the nature of a formula
    n 1: (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" [syn: formulary, pharmacopeia]

Moby Thesaurus II by Grady Ward, 1.0:

101 Moby Thesaurus words for "formulary":
   High-Church, Procrustean law, act, authoritative, baptismal, bill,
   binding, bylaw, canon, canonical, ceremonial, ceremonious,
   ceremony, code, conventionalized, criterion, decree, dictate,
   dictated, dictation, didactic, duty, edict, enactment, eucharistic,
   extrinsic, form, form of worship, formal, formalist, formalistic,
   formality, formula, formular, function, guideline, hard and fast,
   holy rite, impersonal, institution, instructive, jus, law,
   law of nature, legalistic, legislation, lex, liturgic, liturgistic,
   liturgy, mandatory, maxim, measure, mode of worship, mystery,
   nominal, norm, norma, observance, office, official,
   order of nature, order of worship, ordinance, ordonnance, outward,
   paschal, pedantic, practice, preceptive, prescribed,
   prescribed form, prescript, prescription, prescriptive, principle,
   receipt, recipe, regulation, rite, ritual, ritual observance,
   ritualistic, rituality, rubric, rule, ruling, sacrament,
   sacramental, sacramentarian, service, set form, solemnity,
   standard, standing order, statute, statutory, stylized,
   superficial, surface, universal law



Bouvier's Law Dictionary, Revised 6th Ed (1856):

FORMULARY. A book of forms or precedents for matters of law; the form.