het·man 
(hĕtmən)
(hĕtmən)n. pl. het·mans
See ataman.
[Ukrainian het'man, from Polish hetman, from German dialectal hötmann, hetmann, captain; akin to German Hauptmann, from Middle High German houbetman : houbet, head (from Old High German houbit; see kaput- in the Appendix of Indo-European roots) + man, man (from Old High German; see FUGLEMAN).]
- thermal noise
- thermal pollution
- thermal resistance
- thermanesthesia
- thermesthesia
- thermic
- thermion
- thermionic
- thermionic current
- thermionics
- thermionic tube
- thermistor
- thermite
- thermo-
- thermoacoustic
- thermocautery
- thermochemical
- thermochemist
- thermochemistry
- thermocline
- thermocoagulation
- thermocouple
- thermoduric
- thermodynamic
- thermodynamically