structural formula
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. [1913 Webster]

2. (Eccl.) A written confession of faith; a formal statement of foctrines. [1913 Webster]

3. (Math.) A rule or principle expressed in algebraic language; as, the binominal formula. [1913 Webster]

4. (Med.) A prescription or recipe for the preparation of a medicinal compound. [1913 Webster]

5. (Chem.) A symbolic expression (by means of letters, figures, etc.) of the constituents or constitution of a compound. [1913 Webster]

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. [1913 Webster]

{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]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • structural formula — n an expanded molecular formula (as H O H for water) showing the arrangement within the molecule of atoms and of bonds * * * a chemical formula telling how many atoms of each element are present in a molecule of a substance, which atom is linked… …   Medical dictionary

  • Structural formula — Struc tur*al form u*la (Chem.) a symbolic representation of the structure of one molecule of a chemical compound, showing the attachments of the atoms to each other, and representing their arrangement in space; the spatial representation is… …   The Collaborative International Dictionary of English

  • structural formula — n. a formula which illustrates the arrangement of the atoms and bonds in a molecule: see BENZENE …   English World dictionary

  • Structural formula — The structural formula of a chemical compound is a graphical representation of the molecular structure, showing how the atoms are arranged. The chemical bonding within the molecule is also shown, either explicitly or implicitly. There are several …   Wikipedia

  • structural formula — struktūrinė formulė statusas T sritis chemija apibrėžtis Molekulės atomų erdvinio išsidėstymo pavaizdavimas plokštumoje. atitikmenys: angl. atomic formula; structural formula rus. структурная формула …   Chemijos terminų aiškinamasis žodynas

  • structural formula — struktūrinė formulė statusas T sritis fizika atitikmenys: angl. configurational formula; structural formula vok. Strukturformel, f rus. структурная формула, f pranc. formule de structure, f; formule développée, f; formule structurale, f …   Fizikos terminų žodynas

  • structural formula — Chem. a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H O H. Cf. empirical formula, molecular formula. [1885 90] * * * …   Universalium

  • structural formula — noun an expanded molecular formula showing the arrangement of atoms within the molecule • Hypernyms: ↑molecular formula …   Useful english dictionary

  • structural formula — noun Date: circa 1872 an expanded molecular formula showing the arrangement within the molecule of atoms and of bonds …   New Collegiate Dictionary

  • structural formula — expanded chemical formula detailing the connections of atoms and groups of atoms and their type and number …   English contemporary dictionary

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