name of a small ancient principality which was situated in what is now part of Shantung and Kiangsu
郯 is a rare kanji used primarily as a proper name for an ancient small principality in what is now Shandong and Jiangsu. Its standalone meaning is tied to that historical place name.
郯 combines the village radical ⻏ with 炎, likely as a phono-semantic compound where 炎 hints at the pronunciation and ⻏ indicates a place name. The exact historical development is uncertain.
The left side 炎 suggests flames, and the right side ⻏ is a village. Picture an ancient village named after a fiery event or a place where flames were significant, helping you remember it's a place name.
For タン, imagine a tan-colored ancient map showing the small principality: tan -> タン, and the village on the map is 郯.
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