no·vac·u·lite 
(nō-văkyə-līt′)
(nō-văkyə-līt′)n.
A very hard, dense, even-textured, silica-bearing sedimentary rock used in whetstones.
[Latin novācula, razor + -ITE1.]
- permanent press
- permanent-press
- permanent tooth
- permanganate
- permanganic acid
- permatemp
- permeability
- permeable
- permeably
- permeance
- permeant
- permease
- permeate
- permeation
- permeative
- permethrin
- Permian
- per mil
- per mill
- permineralization
- permineralize
- permissibility
- permissible
- permissibleness
- permissibly