Dictionary

he or she en · PRON

(proscribed, singular, sometimes, third-person) He or she; used as a gender-neutral reference to the third person singular.
- In Skinner the Court stated: It is not disputed, however, that chemical analysis of urine, like that of blood, can reveal a host of private medical facts about an employee, including whether he or she is epileptic, pregnant, or diabetic. 2003, Doyice Cotten, John T. Wolohan, Law for recreation and sport managers, page 466:

Spelling	Features	Labels	Source
they	Number=Plur		lexicographic
(s)he		alternative	lexicographic
he/she		alternative	lexicographic
s/he		alternative	lexicographic
she/he		alternative	lexicographic
she or he		alternative	lexicographic
heorshe		alternative	lexicographic