Did you mean "Defensive Meditation" and the "Defense Meditation Module"?
The Defensive Meditation tech unlocks the Defense Meditation Module. If I am not mistaken, it is only available to the Drath and the Altarians, when installed on a ship it provides a bonus to installed defenses such as shields. The tech itself might also provide a bonus percentage to defense, but I'm not so sure as I don't play either race much...
