Everyone following Agents of S.H.I.E.L.D would have heard of the T.A.H.I.T.I Project. Any clue what it stands for?
The Agents of SHIELD Wiki page on the project describes it as thusly;
Project T.A.H.I.T.I. (Terrestrialized Alien Host Integrative Tissue I.) was a S.H.I.E.L.D. Level 9 project ordered by Director Nick Fury and overseen by Agent Phil Coulson. It involved the harvesting of an alien corpse for medicinal purposes. It was only to be used if an Avenger had died. Since Nick Fury considered Agent Coulson just as important, he put the project in action when Coulson was killed by Loki after the Attack on the Helicarrier.
The final word isn't shown. There's some speculation that it's "initiative"