The name Tahnya can be spelled in a few different ways, but the most common spelling is T-a-h-n-y-a. In IPA phonetic transcription, this would be written as /tʌn.jə/. The "t" is pronounced as a voiceless alveolar stop, the "a" as a short vowel sound, the "h" is silent, the "n" is a nasal sound, the "y" is a consonant sound, and the final "a" is another short vowel sound. This name has a unique spelling and pronunciation that can make it memorable for those who hear it.
The name Tahnya does not have a specific etymology as it is a relatively uncommon name and does not come from a specific language or culture. It is possible that it is a variation or spelling of the more common name Tanya, which has Russian origins and is a diminutive form of Tatiana. However, without further information, it is difficult to determine the exact etymology of Tahnya.