Trill language
The Trill language was the spoken language of the Trill.

When performing the zhian'tara ceremony, a  says a special ritual over a vat of symbiont mud, to transfer the telepathic presence of a previous host. () 

Ezri Dax recited a similar ritual individually to commune with Joran. ()

The Trill written language is composed of rounded-triangles with squiggly lines in them. Miles O'Brien was able to read payroll records in the Trill written language. ()

In the 32nd century, Trill weapons and the towels used in the Caves of Mak'ala featured Trill script. ()

Examples of spoken Trill

Zhian'tara 
I'nora, ja'kala Dax... zhian'shee, Lela tanus rem...Gon'dar, Jadzia-tor...

(The Guardian reaches and places a hand to the small of Dax's back, then to the back of Kira's head...)

Jadzia, zhian'tara vok... Tu Dax, zhian'tani ress... Zhian'par, Lela garu'koj...
Transfer of personality of Lela Dax from Jadzia Dax.
Jadzia, zhian'tara vok... Tu Dax, zhian'tani ress... Zhian'par, Odo garu'koj...
Transfer of personality of Curzon Dax from Jadzia Dax to Odo. ()

Ezri contacts Joran 
I'nora, ja'kala vok... 'za Ezri... zhian'tara rek... pora'al Zheem Dax... Tanas Rhem Joran.
Ezri Dax attempts a variation of the zhian'tara to commune individually with Joran. ()

'za Ezri Tanas Rhem Joran.
Ezri tries further, after initially being unsuccessful.
Joran Tanas Rhem. Vok Ezri... Joran Tanas Rhem.
Ezri continues trying until successful.

Formal greeting 
Iituja ro motux shi zhian kalasham tanula ranupakala majashsh.
We welcome you home.
Leader Pav, Commissioner Vos and  Xi upon witnessing the restoration of the  symbiont's memories. ()

Languages