# Definitions for: Formula

[n] something regarded as a normative example; "the convention of not naming the main character"; "violence is the rule not the exception"; "his formula for impressing visitors"
[n] (mathematics) a standard procedure for solving a class of mathematical problems; "he determined the upper bound with Descartes' rule of signs"; "he gave us a general formula for attacking polynomials"
[n] a group of symbols that make a mathematical statement
[n] a conventionalized statement expressing some fundamental principle
[n] directions for making something
[n] a representation of a substance using symbols for its constituent elements
[n] a liquid food for infants

Webster (1913) Definition: For"mu*la, n.; pl. E. Formulas, L. Formul[ae].
[L., dim. of forma form, model. SeeForm, 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.

2. (Eccl.) A written confession of faith; a formal statement
of foctrines.

3. (Math.) A rule or principle expressed in algebraic
language; as, the binominal formula.

4. (Med.) A prescription or recipe for the preparation of a
medicinal compound.

5. (Chem.) A symbolic expression (by means of letters,
figures, etc.) of the constituents or constitution of a
compound.

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.

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,
Benzene nucleus, under Benzene.

Molecular formula (Chem.), a formula indicating the
supposed molecular constitution of a compound.

Synonyms: chemical formula, convention, expression, normal, pattern, recipe, rule

See Also: algorithm, algorithmic program, algorithmic rule, chemical notation, code of behavior, code of conduct, direction, empirical formula, exponential expression, heuristic, heuristic program, heuristic rule, instruction, mathematical statement, metarule, milk, molecular formula, mores, practice, primitive, procedure, process, recursion, sentential function, statement

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