(computing, software) The replacement, by a spell checker, of words that it interprets as being misspelled, by words which are still incorrect in context.

A phenomenon in which attempting to suppress an item of information attracts even more unwanted attention, thus furthering its dissemination.

(quantum field theory) The effect of the Casimir force.

The state in which a series of repeated actions have an effect greater than the sum of their individual effects; noted especially in the repeated administration of drugs or repeated consumption of trace elements or chemicals that show no immediate effect.

To become enforceable, or applicable.

An accelerating growth of magnitude, including fame, fortune, importance, or danger.

The circumstance in which one event instigates an expansive set of other events.

(aeronautics) Any aerodynamic effects occurring due to a vehicle's body or appendages moving in close proximity to the ground.

(sciences) A side-effect, especially a negative one in pharmacology.

(physics) The polarization of the spin of electrons produced when alkali atoms absorb circularly polarized light; any of several similar quantum optical effects