What is "aegrotat"

AEgrotat \[AE]*gro"tat\, n. [L., he is sick.] (Camb. Univ.) A medical certificate that a student is ill.

certificate that a student is ill, Latin, literally "he is sick," third person singular of aegrotare "to be sick," from aeger "sick."

n. 1 A certificate indicating that a student is ill, excusing attendance at lectures and examinations and allowing courses to be passed without finishing the work. 2 An unclassified degree awarded to such a student.