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Webster 1913 Edition


Formula

For′mu-la

,
Noun.
;
pl. E.
Formulas
(#)
, L.
Formulæ
(#)
.
[L., dim. of
forma
form, model. See
Form
,
Noun.
]
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.
Chemical formulæ 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
,
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.

Webster 1828 Edition


Formula

FORM'ULA

,'ULE,
Noun.
[L.]
1.
A prescribed form; a rule or model.
2.
In medicine, a prescription.
3.
In church affairs, a confession of faith.
4.
In mathematics, a general expression for resolving certain cases or problems.

Definition 2024


formulá

formulá

See also: formula and fórmula

Spanish

Verb

formulá

  1. (Latin America) Informal second-person singular (voseo) affirmative imperative form of formular.