TLI
Noun
Meaning
(space science) Initialism of trans-lunar injection.
(immunology) Initialism of trypsin-like immunoreactivity.
Source: en.wiktionary.orgExamples
After reaching orbit, the crew spent time adapting to the zero-gravity environment and preparing the spacecraft for Trans Lunar Injection (TLI), the burn of the third-stage rocket that would propel them to the Moon.
Once the vehicle reached Earth orbit, both the crew and Houston flight controllers spent the next 2 hours and 38 minutes checking that the spacecraft was in proper working order and ready for TLI.
Brown founded The Loglan Institute (TLI) to develop the language and other applications of it.
Over the next 12 minutes before the TLI burn, the Apollo 8 crew continued to monitor the spacecraft and the S-IVB.
The engine ignited on time and performed the TLI burn perfectly.
The proper operation of the S-IVB third stage of the rocket was crucial: in the last unmanned test, it had failed to re-ignite for TLI.