Definition of en in English:

en

noun

Printing
  • A unit of measurement equal to half an em and approximately the average width of typeset characters, used especially for estimating the total amount of space a text will require.

    N
    being, body, creature, individual, organism, life form
    View synonyms

Origin

Late 18th century: the letter N represented as a word, since it is approximately this width.

Pronunciation:

en

/en/