For a group action of a group G on a set S, the stabilizer of s ε S consists of those g ε G such that g · s = s. This stabilizer is a subgroup of G. See alsoorbit-stabilizer theorem.
Chemistry
1. A substance used to inhibit a chemical reaction, i.e. a negative catalyst.
2. A substance used to prevent a colloid from coagulating.
Chemical Engineering
A substance that is added to a colloid to prevent it from coagulating.