English

filetype

From file + type.

A compound of file + type

Proto-Indo-European *gʷʰiH-(s-)lo- ‘sinew’

Proto-Italic *fī(s)lom

Latin fīlum ‘thread’

Old French fil ‘thread’

English file

Proto-Indo-European *(s)tewp- ‘to push’

Ancient Greek τύπτω ‘to strike’

Ancient Greek τύπος ‘mark’

Latin typus

Middle English type ‘symbol’

English type

Today it means

noun An identifier indicating the type of information contained in an electronic format.

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

Etymograph / filetype