per·ox·i·dase 
(pə-rŏksĭ-dās′, -dāz′)
(pə-rŏksĭ-dās′, -dāz′)n.
Any of a group of enzymes that occur especially in plant cells and catalyze the oxidation of a substance by a peroxide.
- overlie
- overload
- overlong
- overlook
- overlord
- overlordship
- overly
- overman
- overmantel
- overmaster
- overmatch
- overmedicate
- overmedication
- overmuch
- over my dead body
- overnight
- overnight bag
- overnighter
- over (one's) head
- over one's head
- over one's skis
- overoptimism
- overoptimistic
- overoptimistically
- overpass