noun
substitute kanji; jōyō kanji used in place of a non-jōyō kanji
A kanji from the jōyō list used to replace a non-jōyō kanji with the same reading, often in official or simplified writing. Example: 両 for 輛.
See also: 常用漢字
「車輛」の「輛」の代用漢字として「両」が使われる。
The kanji 両 is used as a substitute for 輛 in 車輛.
The jōyō kanji list itself; 代用漢字 refers to a specific kanji from that list used as a substitute.
Compound of 代用 (substitute) and 漢字 (kanji).