AC
Keeps rooms cool
AC most commonly abbreviates air conditioning: The AC went out in the middle of summer.
In electronics, AC stands for alternating current—electricity that reverses direction periodically, as opposed to direct current (DC).
AC is the standard form for household electrical supply worldwide.
The abbreviation also appears in academic contexts for Atlantic City or various colleges. (Lowercase ac appears in technical writing.)
Heat-transfer medium
- compressorPressure-increasing mechanical device
- condenserDevice that liquefies gases
- evaporatorLiquid-to-gas conversion device
- thermostatAutomatic climate control device
freon · coolant · coil · filter · dehumidify · BTU · tonnage · central air
Pressure-increasing mechanical device
- condenserDevice that liquefies gases
- evaporatorLiquid-to-gas conversion device
- thermostatAutomatic climate control device
- refrigerantHeat-transfer medium
filter · coil · blower · capacitor · fan · ductwork · relay · drainage
Spelled-out letter shortening
- acronymWord made from initials
- shorthandAbbreviated writing system
- air conditioningIndoor cooling system
- alternating currentPeriodically reversing electrical flow
Periodically reversing electrical flow
- hertzFrequency measurement unit
- frequencyRate of recurrence
- phaseDistinct period in sequence
- voltageElectrical potential difference
ampere · waveform · cycle · transformer · inverter · rectifier · DC · three-phase
Circulation of fresh air
- ductTube conveying fluid
- ductworkHVAC distribution channels
- blowerWind-producing device
- fanAdmirer or air mover
damper · vent · register · diffuser · grille · return · exhaust · circulation
Individual part or measure
- window unitFrame-mounted cooling appliance
- portableAble to be carried
- remote controlWireless device operator
- timerDuration-tracking mechanism
maintenance · installation · service · repair · technician · warranty · efficiency · drain
Easing of distress
- respiteShort pause from hardship
- bedroomRoom for sleeping
- officeProfessional work location
- carWheeled motor vehicle
sweltering · heatwave · sleep · productivity
refrigerant
Heat-transfer medium
- compressorPressure-increasing mechanical device
- condenserDevice that liquefies gases
- evaporatorLiquid-to-gas conversion device
thermostat · freon · coolant · coil · filter · dehumidify · BTU · tonnage · central air · split system
compressor
Pressure-increasing mechanical device
- condenserDevice that liquefies gases
- evaporatorLiquid-to-gas conversion device
- thermostatAutomatic climate control device
refrigerant · filter · coil · blower · capacitor · fan · ductwork · relay · drainage · solenoid
initialism
Spelled-out letter shortening
- acronymWord made from initials
- shorthandAbbreviated writing system
- air conditioningIndoor cooling system
alternating current
Periodically reversing electrical flow
voltage · ampere · waveform · cycle · transformer · inverter · rectifier · DC · three-phase · oscillation
ventilation
Circulation of fresh air
fan · damper · vent · register · diffuser · grille · return · exhaust · circulation · airflow
unit
Individual part or measure
- window unitFrame-mounted cooling appliance
- portableAble to be carried
- remote controlWireless device operator
timer · maintenance · installation · service · repair · technician · warranty · efficiency · drain · condensate
relief
Easing of distress
car · sweltering · heatwave · sleep · productivity
- energyelectricity, power, oil, fuel, gas
- abbreviationsMr, Mrs, Ms, Dr, Jr
- coolingair conditioning, refrigeration, air cooler, heat sink, evaporator
- cooling devicesair conditioner, ceiling fan, box fan, desk fan, portable fan
- currentselectric current, ocean current, air current, river current, tidal current
- Cooling Offchill, swim, fan, ice, shade
- I acceptAffirmative response to offer
- accept itAcknowledge what is
- French accentDistinctive pronunciation from Paris
- broad accentPronounced regional inflection
- access deniedEntry permission withheld
- accent piecesDecorative items adding character