FORMULAS

Noun

formulas

plural of formula

Source: Wiktionary

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FORMULA

For"mu*la, n.; pl. E. Formulas, L. Formulæ. Etym: [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.)

Definition: A written confession of faith; a formal statement of foctrines.

3. (Math.)

Definition: A rule or principle expressed in algebraic language; as, the binominal formula.

4. (Med.)

Definition: A prescription or recipe for the preparation of a medicinal compound.

5. (Chem.)

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

Note: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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