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.]
- thermion
- thermionic
- thermionic current
- thermionics
- thermionic tube
- thermistor
- thermite
- thermo-
- thermoacoustic
- thermocautery
- thermochemical
- thermochemist
- thermochemistry
- thermocline
- thermocoagulation
- thermocouple
- thermoduric
- thermodynamic
- thermodynamically
- thermodynamics
- thermoelectric
- thermoelectrical
- crosstie
- cross-tolerance
- crosstown