Langimage
English

AC

|A-C|

B1

/ˌeɪˈsiː/

alternating current; air conditioning

Etymology
Etymology Information

'AC' originates from the English terms 'alternating current' and 'air conditioning'.

Historical Evolution

'AC' was derived from the initial letters of 'alternating current' and 'air conditioning'.

Meaning Changes

Initially, 'AC' referred to 'alternating current', but it also came to mean 'air conditioning' in modern usage.

Meanings by Part of Speech

Noun 1

an abbreviation for 'alternating current', a type of electrical current in which the flow of electric charge periodically reverses direction.

The AC in the building is supplied by the main power grid.

Synonyms

Antonyms

DC (direct current)

Noun 2

an abbreviation for 'air conditioning', a system for controlling the humidity, ventilation, and temperature in a building or vehicle.

The AC was on full blast to combat the summer heat.

Synonyms

Last updated: 2025/01/11 11:42