English

interordinal

From inter- + ordinal.

Proto-Indo-European *h₁én ‘in’

Proto-Indo-European *h₁entér ‘between’

Proto-Italic *n̥ter ‘between’

Latin inter ‘between’

Latin ōrdō ‘order’

Latin ōrdinālis

Today it means

adj Between taxonomic orders

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

Etymograph / interordinal