- There are two Unicode z-variants, at code points U+585A and U+FA10. The latter form (U+FA10) has the next to last stroke of 豖 connected to the top horizontal stroke (similar to 衣).
- The Japanese form of the character is written with 豕 instead of 豖 as its bottom right component. However both 塚 (Japanese) and 塚 (traditional Chinese) forms are encoded under the same codepoint.
塚 (radical 32, 土+10 in Chinese, 土+9 in Japanese, 13 strokes in Chinese, 12 strokes in Japanese, cangjie input 土月一人 (GBMO), four-corner 47132, composition ⿰土冢(GHTK) or ⿰土⿱冖豕(J))
The Kangxi dictionary lists 塚 as the unorthodox form (俗字) of 冢. However, the usage of 塚 persists in Japan with one stroke removed. In traditional and simplified Chinese 冢 is the orthodox form (正字) of the character. As a variant character, 塚 is used in mainland China.
(common “Jōyō” kanji)
- mound, hillock, tumulus (implies a manmade origin)
Cognate with Old Japanese verb 築く (tsuku, “to build up using earth and/or stone”).
The /a/ ending may indicate that tsuka developed as the nominalization of the 未然形 (mizenkei, “irrealis form”) of the verb, suggesting an original meaning of "that which is being built up into an earthworks (but isn't finished yet)". The irrealis is also the root form for constructing the passive form of all Japanese verbs, so the original meaning might instead have been just the passive sense of "that which is built up into an earthworks".
塚 (hiragana つか, rōmaji tsuka)
- a mound or hillock, generally manmade
- a grave, a tumulus or burial mound
- (grave, small burial mound): 墓 (haka)
- (tumulus, large burial mound): 古墳 (kofun)
- ^ 1988, 国語大辞典（新装版） (Kokugo Dai Jiten, Revised Edition) (in Japanese), Tōkyō: Shogakukan
- ^ 2006, 大辞林 (Daijirin), Third Edition (in Japanese), Tōkyō: Sanseidō, →ISBN
- ^ 1998, NHK日本語発音アクセント辞典 (NHK Japanese Pronunciation Accent Dictionary) (in Japanese), Tōkyō: NHK, →ISBN