Answer: atmos

AnswerCrossword Clue
ATMOS

Brand of clock powered by changes in temperature

ATMOS

Self-winding clock

ATMOS

Greek for "vapor"

ATMOS
Air pressure at sea level: for short.
ATMOS
Air pressure measurement.
ATMOSGreek word for steam.
ATMOSSelf-winding mercury clock
ATMOSPrefixes meaning vapors
ATMOSVapor, in Greece
ATMOS... clock (self-winding timepiece)
ATMOS... Energy (big natural gas utility)