From ธรา (traa, “earth; land; etc”) + ดล (don, “layer; surface; etc”).
| Orthographic | ธราดล dʰ r ā ɗ l | |
|---|---|---|
| Phonemic | ทะ-รา-ดน d a – r ā – ɗ n | |
| Romanization | Paiboon | tá-raa-don |
| Royal Institute | tha-ra-don | |
| (standard) IPA(key) | /tʰa˦˥.raː˧.don˧/(R) | |
ธราดล • (tá-raa-don)