opacifier

About 0.01 uses per million words.

Meaning

1. noun a chemical agent added to a material, such as rocket propellant, to make it opaque
2. noun an agent that makes something opaque

Similar words

oxidizer oxidiser polyoxide antiozonant photoprotectant oxyphenic acid peroxidant kerolox compatibilizer peroxycarbonate

Often followed by

in and is for with