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
   - round-trip light time

Type of: elapsed time

Encyclopedia: RTLT

• infant
• infant death
• infant deathrate
• infant feeding
• infant mortality
• infant mortality rate
• infant prodigy
• infant school
• infant's-breath
• infanta
• infante
• infanticide
• infantile
• infantile amaurotic idiocy
• infantile autism
• infantile fixation
• infantile paralysis
• infantilism
• infantine
• infantry
• infantryman
• infarct
• infarction
• infatuate
• infatuated