o·pac·i·fi·er 
(ō-păsə-fī′ər)
(ō-păsə-fī′ər)n.
A chemical agent added to a material, such as rocket propellant, to make it opaque.
- absconder
- abseil
- absence
- absence seizure
- absent
- absentee
- absentee ballot
- absenteeism
- absentee vote
- absentee voter
- absently
- absent-minded
- absent-mindedly
- absent-mindedness
- absent without leave
- absinth
- absinthe
- absolute
- absolute alcohol
- absolute convergence
- absolute humidity
- absolutely
- absolutely convergent
- absolute magnitude
- absolute music