The Iconian language family consisted of three languages: Dewan, Dinasian, and Iccobar, which all shared certain similarities in simple words. Although these three languages were known by 2365, it was not until the discovery of Iconia and Iconian script in this year, that their common origin from the language of the ancient Iconians was understood.
In 2365, Lieutenant Commander Data derived a rudimentary translation of original Iconian from comparing words such as "mother", "father", "food", "death", "child", "home", "tribe", "pain", "love", "mine", "yours", and "ours", in those three languages. The following examples of Iconian were from the computer in a gateway control station on Iconia:
- "Kandar se, kandar ere, kandar more, kandar sete, kandar ne, kandar qetar, kandar jet, kandar piqe..."
The Zibalian language was written in almost identical characters and in a similar fashion to Iconian. This suggests either the Zibalian spoken and written language was derived from Iconian, or their spoken language developed separately but their written language was borrowed from the Iconians. The Lokirrim script may have also been derived from Iconian. However, it changed considerably, suggesting it evolved away from Iconian.
- Dewa was located in or near Romulan space. The primary was a Class M star. It had a magnitude of +9. In Star Trek Online's continuity Dewa's third planet was settled by the Romulan Republic, a Romulan splinter faction led by D'Tan, in the year 2409. The Republic made the planet their capital, renaming it New Romulus.
- Iccobar was located in or near Federation space. This was a binary star. Primary was a Class G star. It had a magnitude of +5, which was the same brightness as Sol. Its stellar companion was a Class M star.
- Dinasia was located in or near Federation space. The primary was a Class K star. It had a magnitude of +9. This system was quarantined. (page 63)