detect

verb

de·​tect di-ˈtekt 

dē-

detected; detecting; detects

transitive verb

1

: to discover the true character of

detecting drug smugglers

2

: to discover or determine the existence, presence, or fact of

detect alcohol in the blood

Do I detect a note of sarcasm in your voice?

3

: demodulate

intransitive verb

: to work as a detective

detectability

di-ˌtek-tə-ˈbi-lə-tē 

dē-

noun

detectable

di-ˈtek-tə-bəl 

dē-

adjective

Synonyms of detect

• find
• learn
• locate
• discover
• get

Examples of detect in a Sentence

The test is used to detect the presence of alcohol in the blood.

This type of cancer is difficult to detect in its early stages.

Recent Examples on the Web

Its software can detect those variations and adjust each brick’s position accordingly. — Christopher McFadden, Interesting Engineering, 4 Sep. 2026

Later, after clearing the Silo 1 control room, Victor both chastises Camille for her failures and grudgingly praises her for lying so convincingly that his biometric lie detectors couldn’t detect it. — Noel Murray, Vulture, 4 Sep. 2026

Those images let the brush detect when it’s arrived at a space between your teeth and trigger the jet accordingly. — Elizabeth Gulino, Allure, 4 Sep. 2026

The ship had not been warned of the threat and had little time to detect and respond to a missile launched from shore 12 miles away, and some of its defensive systems were not fully activated. — Holmes Liao, Foreign Affairs, 4 Sep. 2026

Word History

Etymology

Middle English, from Latin detectus, past participle of detegere to uncover, detect, from de- + tegere to cover — more at thatch

First Known Use

1574, in the meaning defined at transitive sense 1

Rhymes for detect

• affect
• aspect
• bedecked
• bisect
• collect
• connect
• correct
• deflect
• direct
• dissect
• effect
• eject

Kids Definition

detect

verb

de·​tect di-ˈtekt 

: to discover the nature, existence, presence, or fact of

detect the approach of an airplane

detectable

-ˈtek-tə-bəl 

adjective

detection

-ˈtek-shən

noun