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NAmE//dɪˈtɛkt//
detect somethingVerb Forms present simple I / you / we / they detect he / she / it detects
past simple detected
-ing form detecting
- note
- detect
- observe
- witness
- notice to see, hear, or become aware of someone or something; to pay attention to someone or something:The first thing I noticed about the room was the smell.
- note (somewhat formal) to notice or pay careful attention to something:Please note (that) the office will be closed on Monday. This word is very common in business English:Note that the prices do not include sales tax.
- detect to discover or notice something, especially something that is not easy to see, hear, etc.:The tests are designed to detect the disease early.
- observe (formal) to see or notice someone or something:Let me know if you observe any changes in his behavior. The police observed a van leaving the parking lot.
- witness (somewhat formal) to see something happen:Police have asked anyone who witnessed the robbery to contact them.
- to notice/note/detect/observe that/how/what/where/who…
- to notice/observe/witness something happen/somebody do something
NAmE//dɪˈtɛktəbl//
adjective The noise is barely detectable by the human ear. opposite undetectableSee detect in the Oxford Advanced Learner's DictionaryCheck pronunciation: detect