sensor
SEN-ser
/ˈsen.sər/
A device that detects or measures a physical property and records, indicates, or responds to it.
Emphasizes the technical conversion of real-world physical inputs (heat, light, motion) into readable data.
The story behind the word. Derived from Latin 'sentire' (to feel or perceive), the word 'sensor' emerged in the mid-20th century as technical terminology for electronic hardware designed to replicate human biological senses like sight, touch, and thermal perception.
Word relationships
- detector: Focuses on noticing the presence of a specific condition rather than continuous quantitative measurement.
- transducer: A technical term specifically describing the conversion of one energy form into another.
- actuator: A mechanical device that executes physical motion or action rather than measuring environmental data.
Commonly confused with
- censor: A censor suppresses sensitive content; a sensor detects physical environmental signals.
Word family
- sensory (adjective): Relating to physical sensation or sensory organs.
- sensing (noun): The act or process of gathering environmental data via devices.
Collocations
- optical sensor
- motion sensor
- sensor network
- sensor data
Example sentences
- "An optical sensor at the downtown crosswalk measures pedestrian counts and adjusts light timings dynamically." Smart intersection management
- "Engineers placed a chemical sensor inside water mains to detect trace pollutants before they reach consumer taps." Environmental tracking
Memory hook
SENSORS make SENSE of physical environmental stimuli. An electronic eye, ear, or nose for a machine.
When not to use
Do not confuse with 'censor' (one who removes inappropriate material) or 'scenter' (something that smells).
Fun facts
- A single modern smartphone contains over a dozen sensors, including accelerometers, gyroscopes, magnetometers, and ambient light detectors.
Related words
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