English

interdigit

From inter- + digit.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Latin digitus ‘a digit, number’

Middle English digit

English digit

Today it means

adj Between digits (as when dialling a number)

Language periods are conventional ranges, not dates for this word.

Etymograph / interdigit