1eR

1er is the abbreviated form of the French ordinal adjective premier, meaning “first.” It is used in written French to denote the first item in a sequence and appears before masculine singular nouns or dates.

In practice, 1er is used before masculine nouns such as le 1er étage (the first floor) or le 1er chapitre (the first chapter). It is also widely used with dates, as in 1er janvier (January 1) or le 1er mars. For feminine nouns, the corresponding form is 1re (e.g., la 1re fois).

Typography and conventions: the suffix er is traditionally written as superscript in formal typography, but in plain text it is typically shown simply as "1er." This abbreviation helps save space in forms, schedules, headings, and dated documents, where writing the full word premier would be more cumbersome.

Usage notes: 1er functions as a determiner for masculine singular nouns and is distinct from the feminine 1re, which accompanies feminine nouns or feminine phrases such as la 1re fois. When ordinal numbers are written out in full or in other contexts, the full form premier can be used, but 1er remains common in everyday writing and signage.

See also: premier, ordinals in French. The concept parallels ordinal abbreviations in other languages, such as 1.º in Spanish or Portuguese, and the general practice of marking first in lists or dates.