A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound, as well as how many there are for each element in the form of subscripts.
Overabundant definition, an excessive amount or abundance; surfeit: an overabundance of sugar in the diet. See more.
oversubscription a situation in which the number of SHARES applied for in a new SHARE ISSUE exceeds the numbers to be issued. This requires the ISSUING HOUSE responsible for handling the share issue to devise some formula for allocating the shares.