a piece of equipment that reacts to light and is used in machines such as burglar alarms (=machines that make a loud noise if a thief tries to get into a building)
Synonyms and related words
Parts of machines and machinery
ancillary
ball bearing
bearing
2
physicsa piece of equipment that changes light from the sun into electricity
Synonyms and related words
Equipment for making and storing electricity
accumulator
battery
battery pack
photoelectric cell
noun countable
US /ˌfoʊtoʊɪˌlektrɪk ˈsel/
Word Forms
singular
photoelectric cell
plural
photoelectric cells
DEFINITIONS2
1
a piece of equipment that reacts to light and is used in machines such as burglar alarms (=machines that make a loud noise if a thief tries to get into a building)
Synonyms and related words
Parts of machines and machinery
ancillary
ball bearing
bearing
2
physicsa piece of equipment that changes light from the sun into electricity