Radical 63
Radical 63 or radical door meaning "door" is one of the 34 Kangxi radicals composed of 4 strokes.
In the Kangxi Dictionary, there are 44 characters to be found under this radical.
, the xin zixing of, is the 97th indexing component in the Table of Indexing Chinese Character Components predominantly adopted by Simplified Chinese dictionaries published in mainland China. Since the difference between 户 and 戶 is defined as a typeface difference rather than variant forms, no associated indexing component is listed under 户. 户 is also the standard form in Hong Kong Traditional Chinese.
In Japanese jōyō kanji, the radical 戶 is replaced with the shinjitai form 戸, while the kyujitai form as a component is used in hyōgai kanji.
Variant forms
This radical takes different forms in different languages or characters.Traditionally, both 戶 and 戸 were widely used in printing, while 户 was used only as a writing form. In the Kangxi Dictionary, 戶 was chosen as the standard form, which was then inherited by Taiwan Traditional Chinese and Korean hanja.
In mainland China, after the adoption of simplified Chinese characters and xin zixing, 户, which used to be a handwriting form, became the standard xin zixing printing form. This change also applies to China's Guo Biao Traditional Chinese which is used chiefly in printing Chinese classics. 户 is also the standard form in Hong Kong's List of Graphemes of Commonly-Used Chinese Characters, a non-mandatory standard of Hong Kong Traditional Chinese, though 戶 appears more frequently in daily use. Note that in both mainland China and Hong Kong, the left component of 所 remains to be 戶.
In Japan, the radical 戶 in jōyō kanji are replaced with its shinjitai form 戸, while in hyōgai kanji, the radical remains to be 戶, causing an inconsistency. Both 戶部 and 戸部 could be used as the radical's names in Japanese dictionaries' indexes.