NCIt definition : A substance formed by chemical union of two or more elements or ingredients in definite
proportion by weight.;
Alternative definition : NCI-GLOSS: In science, a substance that is made up of more than one ingredient.;
NCIt note : A Compound can be a simple compound such as SDS (sodium dodecyl sulfate). It may also
be made of other Compounds in proportions using CompoundMeasurements to enumerate
the Compounds and their amounts such as LB (Luria Broth) Media.;