round-trip light time

1. 1.

   the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point

   SynonymsRTLT

   Broaderelapsed time

Questions about round-trip light time

What does round-trip light time mean?

round-trip light time means "the elapsed time it takes for a signal to travel from Earth to a spacecraft (or other body) and back to the starting point".

What is another word for round-trip light time?

Close synonyms include RTLT. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

Is round-trip light time a common word?

round-trip light time is banded "Rare" — specialist or archaic — most readers will not have met it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.