compound

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Related to compounds: Organic compounds, Chemical compounds

compound

 [kom´pownd]
1. made up of diverse elements or ingredients.
2. a substance made up of two or more materials.
3. in chemistry, a substance made up of two or more elements in union. The elements are united chemically, which means that each of the original elements loses its individual characteristics once it has combined with the other element(s). When elements combine they do so in definite proportions by weight; this is why the union of hydrogen and oxygen always produces water. Sugar, salt, and vinegar are examples of compounds.

Organic compounds are those containing carbon atoms; inorganic compounds are those that do not contain carbon atoms.
clathrate c's inclusion complexes in which molecules of one type are trapped within cavities of another substance, such as within a crystalline lattice structure or large molecule.
quaternary ammonium compound an organic compound containing a quaternary ammonium group, a nitrogen atom carrying a single positive charge bonded to four carbon atoms, e.g., choline.

com·pound

(kom'pownd),
1. chemistry a substance formed by the covalent or electrostatic union of two or more atoms, generally differing entirely in physical characteristics from any of its components.
2. pharmacy denoting a preparation containing several ingredients. For compounds not listed here, see the specific chemical or pharmaceutical names.
[through O.Fr., fr. L. compono]

compound

/com·pound/ (kom´pownd)
1. made up of two or more parts or ingredients.
2. a substance made up of two or more materials.
3. in chemistry, a substance consisting of two or more elements in union.
4. to combine to form a whole; unite.

clathrate compounds  inclusion complexes in which molecules of one type are trapped within cavities of another substance, such as within a crystalline lattice structure or large molecule.
inorganic compound  a compound of chemical elements containing no carbon atoms.
organic compound  a compound of chemical elements containing carbon atoms.
organometallic compound  one in which carbon is linked to a metal.
quaternary ammonium compound  an organic compound containing a quaternary ammonium group, a nitrogen atom carrying a single positive charge bonded to four carbon atoms, e.g., choline.

compound

Etymology: L, componere, to assemble
, [kom′pound]
1 n, (in chemistry) a substance composed of two or more different elements, chemically combined in definite proportions, that cannot be separated by physical means.
2 n, any substance composed of two or more different ingredients.
3 adj, denoting an injury characterized by multiple factors, such as a compound fracture.
4 [kəmpound′] , v, to make a substance by combining ingredients, such as a pharmaceutic.

compound

Chemistry
noun A substance made up of ≥ 2 elements.

Pharmacology
verb To combine two or more active pharmacologic agents into a single preparation, often referred to as a “dosage form”.

compound

Clinical pharmacology verb To combine two or more active pharmacologics to produce a single preparation, often referred to as a dosage form. See Formulation.

com·pound

(kom'pownd)
1. chemistry A substance formed by the covalent or electrostatic union of two or more elements, generally differing entirely in physical characteristics from any of its components.
2. pharmacy A preparation containing several ingredients.

compound

(of plant structures) made up of several similar parts, as in a leaf compound of several leaflets. A simple structure is one not divided into similar parts.

compound,

n 1. in chemistry, a distinct substance produced by chemical combination of two or more elements, the atoms of which are held together by chemical bonds.
2. in herbal medicine, a mixture of two or more herbs that act synergistically. See also element and molecule.

com·pound

(kom'pownd)
1. chemistry a substance formed by the covalent or electrostatic union of two or more atoms, generally differing entirely in physical characteristics from its components.
2. pharmacy denoting a preparation of several ingredients.

compound,

n 1. a combination of elements held together in a well-defined pattern by chemical bonds. In pharmacy, a mixture of drugs.
2. a thermoplastic substance used as a nonelastic impression material.
compound A, B, E, F, S,
compound cone,
n a compound in the form of a cone or pyramid; used for impressions of individual preparations.
compound, impression (modeling compound),
n See compound.
compound, intermetallic,
n a compound of two metals in which the metals are only partially soluble in one another; exhibits a homogeneous grain structure, but the atoms do not intermingle randomly in all proportions.
compound, modeling,
n See compound, impression.
compound, phenolic,
n a mouthwash made from essential oils in combination with alcohol that is available over the counter and approved by the American Dental Association for use in controlling plaque and gingivitis. Also called
essential oils mouthrinses.
compound tracing stick,
n a compound dispensed in stick form.
compound, tray,
n a compound similar to impression compound but with less flow and more viscosity when soft and more rigidity when chilled.

compound

1. made up of diverse elements or ingredients.
2. a substance made up of two or more materials.
3. in chemistry, a substance made up of two or more elements in union. The elements are united chemically, which means that each of the original elements loses its individual characteristics once it has combined with the other element(s).

compound 469
compound 1080
see sodium fluoroacetate.
compound 1081
compound granular corpuscle
compound interest rate
the interest rate charged when compounding or discounting borrowed or loaned money.
References in periodicals archive ?
It is these inherent viscoelastic characteristics of rubber compounds, combined with the entropy elasticity, that renders the interesting deformation-rate dependent behavior.
The researchers argue that the naturally occurring compounds can shed light on the fates of the similar human-made ones.
Computer based experiments were carried out by NEC, which contained approximately 1500 "hits" that bind to GPCR, from a library consisting of 260,000 compounds.
Evidence for this theory is seen in the effects of chemosensitizing drugs, which inhibit efflux transporters much as musk compounds do.
Although completely different structurally, there are some important similarities between these new compounds and Peplin's lead anti-cancer drug PEP005, in particular the modulation of protein kinase C (PKC) and evidence of powerful effects on the immune system.
Figure 2 is a graphical representation of the reduction of tensile strength of a coldbox core sand mixture (1% binder by weight) with varying levels of vein reduction compounds.
In this trial, the compound was dosed once per three weeks to provide information on the safety and pharmacokinetics of single administrations of AVE9633.
Figure 19 compares again the shear thinning imparted by the different polymers to this series of compounds.
Custom compounds PP, HDPE, nylon and other engineering resins with an emphasis on color matching with quick turnaround and anti-counterfeiting technology.
The heat alters their chemical structure, changing them into bitter-tasting compounds known as iso-alpha acids.
Figure 1 illustrates structures of the 15 compounds used in this study; these include 12 flavonoids with different hydroxyl substitution patterns, plus the chemicals phloretin (a dihydrochalcone), cantharidin (a lactone), and emodin (an herbal laxative).
Laboratory Study--An appropriate question to raise is whether those compounds and the concentrations of those compounds found in the waste leachates represent serious potential pollution problems.