Structural-formula
noun, Chemistry.
1.
a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H.
structural formula
noun
1.
a chemical formula showing the composition and structure of a molecule. The atoms are represented by symbols and the structure is indicated by showing the relative positions of the atoms in space and the bonds between them: H–C≡C–H is the structural formula of acetylene See also empirical formula, molecular formula
structural formula struc·tur·al formula (strŭk’chər-əl)
n.
A chemical formula that shows the number and kinds of atoms in a molecule and how the atoms and bonds in the molecule are arranged.
structural formula
(strŭk’chər-əl)
A chemical formula that shows how the atoms making up a compound are arranged within the molecule. For example, the structural formula of aspirin is CH3COOC6H4COOH, indicating that it consists of an acetyl group (CH3COO) attached to the carboxylic acid (COOH) of a phenyl group (C6H4). Compare empirical formula, molecular formula.
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- Structural-gene
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- Structural-geology
noun 1. the branch of geology dealing with the structure and distribution of the rocks that make up the crust of the earth. Also called tectonics. Compare structure (def 7a).
- Structural-iron
noun 1. iron shaped for use in construction.
- Structural isomer
structural isomer Any of two or more compounds with identical chemical formulas, such as propyl alcohol and isopropyl alcohol, that differ structurally in the sequence in which the atoms are linked. Structural isomers do not exhibit the same chemical behavior. Compare stereoisomer.