Noun
(space science) Initialism of trans-lunar injection.
(immunology) Initialism of trypsin-like immunoreactivity.
Source: en.wiktionary.orgAfter 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. Source: Internet
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. Source: Internet
Brown founded The Loglan Institute (TLI) to develop the language and other applications of it. Source: Internet
Over the next 12 minutes before the TLI burn, the Apollo 8 crew continued to monitor the spacecraft and the S-IVB. Source: Internet
The engine ignited on time and performed the TLI burn perfectly. Source: Internet
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. Source: Internet