Formulas definition

Formulas





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1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Formula \For"mu*la\, n.; pl. E. {Formulas}, L. {Formul[ae]}.
     [L., dim. of forma form, model. See{Form}, n.]
     1. A prescribed or set form; an established rule; a fixed or
        conventional method in which anything is to be done,
        arranged, or said.
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     2. (Eccl.) A written confession of faith; a formal statement
        of foctrines.
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     3. (Math.) A rule or principle expressed in algebraic
        language; as, the binominal formula.
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     4. (Med.) A prescription or recipe for the preparation of a
        medicinal compound.
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     5. (Chem.) A symbolic expression (by means of letters,
        figures, etc.) of the constituents or constitution of a
        compound.
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     Note: Chemical formul[ae] consist of the abbreviations of the
           names of the elements, with a small figure at the lower
           right hand, to denote the number of atoms of each
           element contained.
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     {Empirical formula} (Chem.), an expression which gives the
        simple proportion of the constituents; as, the empirical
        formula of acetic acid is {C2H4O2}.
  
     {Graphic formula}, {Rational formula} (Chem.), an expression
        of the constitution, and in a limited sense of the
        structure, of a compound, by the grouping of its atoms or
        radicals; as, a rational formula of acetic acid is
        {CH3.(C:O).OH}; -- called also {structural formula},
        {constitutional formula}, etc. See also the formula of
        {Benzene nucleus}, under {Benzene}.
  
     {Molecular formula} (Chem.), a formula indicating the
        supposed molecular constitution of a compound.
        [1913 Webster]

















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