As nouns the difference between residual and residuosity
is that residual is a remainder left over at the end of some process while residuosity is (mathematics) the condition of being residual.
As an adjective residual
is of, relating to, or remaining as a residue; left over.
residual
English
Adjective
(-)
Of, relating to, or remaining as a residue; left over.
Synonyms
* residuary
Noun
(
en noun)
A remainder left over at the end of some process.
(in the plural) Payments made to performers, writers and directors when a recorded broadcast is repeated.
residuosity
English
Noun
(mathematics) The condition of being residual