Remaining after the greater part has been taken.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (adjective) (adj.) (adjective)
Remaining as residue.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (adjective) (adj.) (adjective)
Remaining after a part is taken, or as residue.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (adjective) (adj.) (adjective)

Usage examples:

The weathering of a basic igneous rock, as in Cuba, may produce important residual iron ore deposits, which are also used as soils.
- The Economic Aspect of Geology by C. K. Leith
Further, the experiences come and go; they correct, enlarge, and destroy one another, leaving behind them a certain residual store, which condensed in intuitions and formulated in principles, direct and modify all future experiences....
- A Grammar of Freethought by Chapman Cohen
In certain deposits, there is evidence that both zinc and copper have been taken out of the upper zone in great quantity; but they happen to be associated with limestone, which has dissolved still more rapidly, with the result that there is a residual accumulation of copper and zinc values.
- The Economic Aspect of Geology by C. K. Leith