Adjective
intercharacter (not comparable)
Between text characters.
the intercharacter spacing of a font
For example, individual characters may be sent at a 13 words-per-minute rate, but the intercharacter and interword gaps may be lengthened so the word rate is only 5 words per minute. Source: Internet
The signal sense of the intercharacter interval is always the same as the sense of the stop element, i.e., "1" or "mark." Source: Internet