Formula \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.
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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.
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Graphic \Graph"ic\ (gr[a^]f"[i^]k), Graphical \Graph"ic*al\
(gr[a^]f"[i^]*kal), a. [L. graphicus, Gr. grafiko`s, fr.
gra`fein to write; cf. F. graphique. See Graft.]
1. Of or pertaining to the arts of painting and drawing; of
or pertaining to graphics; as, graphic art work. [WordNet
sense 2]
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2. Of or pertaining to the art of writing.
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3. Written or engraved; formed of letters or lines.
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The finger of God hath left an inscription upon all
his works, not graphical, or composed of letters.
--Sir T.
Browne.
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4. Having the faculty of clear, detailed, and impressive
description; as, a graphic writer.
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5. Well delineated; clearly and vividly described;
characterized by, clear, detailed, and impressive
description; vivid; evoking lifelike images within the
mind; as graphic details of the President's sexual
misbehavior; a graphic description of the accident;
graphic images of violence. [WordNet sense 5]
Syn: lifelike, pictorial, vivid.
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6. Hence: describing nudity or sexual activity in explicit
detail; as, a novel with graphic sex scenes.
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7. relating to or presented by a graph[2]; as, a graphic
presentation of the data. [WordNet sense 3]
Syn: graphical.
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Graphic algebra, a branch of algebra in which, the
properties of equations are treated by the use of curves
and straight lines.
Graphic arts, a name given to those fine arts which pertain
to the representation on a fiat surface of natural
objects; as distinguished from music, etc., and also from
sculpture.
Graphic formula. (Chem.) See under Formula.
Graphic granite. See under Granite.
Graphic method, the method of scientific analysis or
investigation, in which the relations or laws involved in
tabular numbers are represented to the eye by means of
curves or other figures; as the daily changes of weather
by means of curves, the abscissas of which represent the
hours of the day, and the ordinates the corresponding
degrees of temperature.
Graphical statics (Math.), a branch of statics, in which
the magnitude, direction, and position of forces are
represented by straight lines
Graphic tellurium. See Sylvanite.
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