As a noun ed
As an article se is
adjectival article for definite feminine singular adjectives in the genitive, dative and ablative cases.
Education. Often used in set phrases such as (phys ed), (term, driver's ed), (special ed), etc.
The ISO 3166-1 two-letter (alpha-2) code for Sweden.
European Company (From (etyl) Societas]] [[europaea, Europaea )