time-of-flight

adjective
\ˈtīm-ə(v)-ˈflīt \

Definition of time-of-flight 

: of, relating to, being, or done with an instrument (such as a mass spectrometer) that separates particles (such as ions) according to the time required for them to traverse a tube of a certain length

First Known Use of time-of-flight

1945, in the meaning defined above

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The first known use of time-of-flight was in 1945

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time-of-flight

adjective
\ˌtīm-ə(v)-ˌflīt \

Medical Definition of time-of-flight 

: of, relating to, being, or done with an instrument (as a mass spectrometer) that separates particles (as ions) according to the time required for them to traverse a tube of a certain length a time-of-flight imaging system time-of-flight magnetic resonance angiography abbreviation TOF

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