noun
multi-byte character
Technical term in computing for a character encoded using two or more bytes, as opposed to single-byte characters.
日本語の文字は複数バイト文字で表現されることが多い。
Japanese characters are often represented as multi-byte characters.
このシステムは複数バイト文字を正しく処理できない。
This system cannot handle multi-byte characters correctly.
Compound of 複数 (multiple) + バイト (byte) + 文字 (character), a straightforward technical term.