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Pronunciation varies by accent · adjective
(mathematics) (of a four-vector) Having a space component whose magnitude is equal to its time component multiplied by the speed of light..
Use lightlike when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Lightlike means (mathematics) (of a four-vector) Having a space component whose magnitude is equal to its time component multiplied by the speed of light..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use lightlike where its definition matches the intended context.
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