The Free On-line Dictionary of Computing (30 December 2018):

kanji

    /kahn'jee/ (From the Japanese
   "kan" - the Chinese Han dynasty, and "ji" - glyph or letter
   of the alphabet.  Not capitalised.  Plural "kanji") The
   Japanese word for a Han character used in Japanese.  Kanji
   constitute a part of the writing system used to represent
   the Japanese language in written, printed and displayed form.
   The term is also used for the collection of all kanji
   letters.

   US-ASCII doesn't include kanji characters, but some
   character encodings, including Unicode, do.

   The Japanese writing system also uses hiragana, katakana, and
   sometimes romaji (Roman alphabet letters).  These characters
   are distinct from, though commonly used in combination with,
   kanji.  Furigana are also added sometimes.

   (2000-12-30)