From Middle Chinese 炭 (MC thanH, “charcoal”). Cognate with Thai ถ่าน (tàan), Northern Thai ᨳ᩵ᩣ᩠ᨶ, Lao ຖ່ານ (thān), Lü ᦏᦱᧃᧈ (ṫhaan¹), Shan ထၢၼ်ႇ (thàan).
ᥗᥣᥢᥱ (thǎan) (1963 orthography ᥗᥣᥢ̌)