(narratology) The technique, typically used in horror films and video games, of having something occur suddenly and without warning to frighten the audience.

(mathematics) Pertaining to a generalization of a cosimplicial space to diagrams of spaces that are cosimplicial in each direction.

Delia antiqua, a cosmopolitan pest of crops, whose larvae or maggots feed on onions, garlic and other bulbous plants.

plural of invagination