dean
UK[diːn]US[diːn]
n
the head of a university faculty or department or of a medical school.
n
the head of a college or university, especially one with residential buildings.
n
(in the christian church) the head of the chapter of a cathedral or collegiate church.
Etymology
the word 'dean' originates from late latin 'decanus', a term for a leader of ten soldiers or ten monks, derived from latin 'decem', meaning "ten." this reflects a common roman military and administrative practice of organizing groups into tens. through old french 'deien', the term entered middle english, where its meaning shifted from a leader of ten to a more general ecclesiastical supervisor, specifically the head of a cathedral chapter. the academic sense, denoting the head of a faculty or college, developed later by analogy to this ecclesiastical office, transferring the concept of leadership and supervision from a religious to an educational context.
Analysis
the word 'dean' is a simplex loanword from old french 'deien', which itself came from late latin 'decanus', meaning "head of a group of ten." it is not productively formed from smaller morphemes in modern english.
Examples
she was appointed dean of the faculty of arts last year.
students with disciplinary issues were sent to the dean's office.
the dean of the cathedral led the procession.