zest·er 
(zĕstər)
(zĕstər)n.
A kitchen utensil, usually a steel panel or strip with a handle and sharp-edged slits and perforations, used for zesting the rinds of citrus fruit.
- 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
- cross-town