detector
UK[dɪˈtɛktə]US[dɪˈtɛktər]
n
A device or instrument designed to discover the presence of something, such as metal, radiation, or smoke.
n
A person or thing that detects or discovers something.
Morpheme Breakdown
de
tect
or
de
away, off
tect
cover
or
agent suffix
Etymology
The word 'detector' is built upon the Latin verb detegere, meaning "to uncover, reveal, or expose." This verb itself is composed of the prefix de- (implying removal or reversal) and tegere (to cover). Thus, the literal sense is "to un-cover." The agent noun suffix -or was added to form detector, denoting "one who or that which uncovers." Over time, the meaning evolved from the physical act of uncovering to the more abstract and technical sense of discovering, identifying, or revealing the presence of something hidden, such as a signal, substance, or object, which is the core function of modern devices like smoke detectors or metal detectors.
Analysis
Structure: de (away, off) + tect (cover) + or (agent suffix)
- de: A Latin prefix meaning "away, off, down, reversal."
- tect: From the Latin root tect- (past participle stem of tegere), meaning "to cover."
- or: A Latin-derived agent noun suffix indicating "a person or thing that does something."
Examples
The smoke detector started beeping, alerting everyone in the building.
Security personnel used a metal detector to screen passengers at the airport.
This sophisticated device acts as a lie detector by measuring physiological responses.