What does "SDF" stand for in Robotech? I knew that the Robotech series was adapted from three other anime: The Super Dimension Fortress Macross, Super Dimension Cavalry Southern Cross, and Genesis Climber MOSPEADA. However, I always thought that when it came to the "SDF-#" it was either referring to "Space Defense Fortress" or "Space Defense Force".

However, when I was watching Episode 78 ("Ghost Town"), the old guys referred to the crash warship as a "Super Dimensional Fortress".

What does "SDF" actually mean in Robotech?
According to the Robotech Saga wikia, "SDF" in the "SDF-#" stands for Super Dimensional Fortress.