faculty; professorate; group of professors
Refers to the teaching staff of a university or academic institution as a collective group. Often used in contexts discussing the composition, quality, or activities of the faculty.
The faculty of this university is outstanding.
The new students were introduced to the group of professors.
教員 is a broader term for teaching staff at any educational level, whereas 教授陣 is specifically for university professors.
Compound of 教授 (professor) and 陣 (group, camp). The suffix 陣 is used to denote a collective body, similar to its use in words like 報道陣 (press corps).