subtractive

adjectives

constituting or involving subtraction
"a subtractive correction"
subtractive
is derived from
subtract
antonym
additive
is similar to
tending to ablate; i.e. to be removed or vaporized at very high temperature
"ablative material on a rocket cone"
ablative
is similar to
characterized by or causing diminution or curtailment
"their views of life were reductive and depreciatory" - R.H.Rovere
reductive