The Delta Quadrant cytoplasmic lifeform language was the incredibly complex language of an unnamed non-humanoid cytoplasmic lifeform encountered by the starship Voyager in 2375. After Voyager received a message from this species, Captain Kathryn Janeway attempted to translate the language by instructing the computer to assign symbols to all the different tones in it, hoping to ascertain their meaning. There were over 10,000 different sounds in only one section of the message. In the end, the language proved indecipherable, its complexity far beyond the capabilities of the Federation to translate at the time of the encounter.