Definition of residuum in English:

residuum

Syllabification: re·sid·u·um
Pronunciation: /riˈzijo͞oəm
 
/

noun (plural residua /-ˈzijo͞oə/)

technical
A substance or thing that remains or is left behind, in particular, a chemical residue.
More example sentences
  • But figuring out exactly how to regenerate ammonia borane from the residuum left after hydrogen has been extracted remains a stumbling block.
  • The barite ore is massive and occurs within residuum derived from carbonate units.
  • Type I peridotites are interpreted to be the residua remaining after extraction of a partial melt.

Origin

late 17th century: from Latin, neuter of residuus 'remaining', from the verb residere.

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