A mysterious and widespread phenomenon of the sudden disappearance of colonies of bees.

Energy in an interaction that is not supplied by the initiator of the interaction.

plural of collector

An institution of higher education that awards the associate's degree but not bachelor's degree or higher. / (Singapore) A government high school, usually abbreviated to "JC"

(US) An educational institution providing college education granting certificates, diplomas, and associate's degrees, but not higher level degrees; junior college.

plural of garbage collector

(idiomatic) To alternate between two opposite extremes, such as enthusiasm and disinterest or success and failure.

(informal) A fictitious name used to designate the typical college student or to characterize a person as being a typical college student.

(veterinary medicine) A congenital, inherited, bilateral eye disease of dogs characterized by an underdeveloped choroid.

plural of collective noun