(philosophy) The proposition that scientific theories, and any other claims to knowledge, can and should be rationally criticized, and, if they have empirical content, can and should be subjected to tests which may falsify them.

(physics) The angle of incidence beyond which light traveling through a medium experiences total internal reflection upon encountering a boundary with a less refractive medium.

A direct action event in which bicycle riders travel through city streets as a group.

(operations) The sequence of dependent steps that determine the minimum time needed to carry out an operation.

Criticism intended to provide suggestions for improvement without insulting the recipient.

Criticism performed with the intention to harm someone, derogate and destroy someone’s creation, prestige, reputation and self-esteem.

(literature) The study, discussion, evaluation, and interpretation of literature.

A form of literary criticism that analyzes the context of the text.

The application of logical principles, rigorous standards of evidence, and careful reasoning to the analysis and discussion of claims, beliefs, and issues.

(programming) A piece of code that accesses a shared resource that must not be concurrently accessed by more than one thread of execution.