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.
- hemispherical
- hemispherically
- hemistich
- hemline
- hemlock
- hemlock woolly adelgid
- hemmer
- hemo-
- hemochromatosis
- hemocoel
- hemocyanin
- hemocyte
- hemodialysis
- hemodynamic
- hemodynamically
- hemodynamics
- hemoflagellate
- hemoglobin
- hemoglobinuria
- hemoglobinuric
- hemolymph
- hemolymphatic
- hemolysin
- hemolysis
- hemolytic