dilution

nouns

a diluted solution
is derived from
is a type of (narrower)
a homogeneous mixture of two or more substances; frequently (but not necessarily) a liquid solution
"he used a solution of peroxide and water"
weakening (reducing the concentration) by the addition of water or a thinner
is derived from
is derived from
antonym
is a type of (narrower)
the act of reducing the strength of something