Any surgical procedure that changes a person's sex characteristics so that they conform to a standard, particularly those decided by transgender people for themselves or for intersex people to present in a dyadic fashion, the latter often done without consent.

A sudden transient rush, flood or increase. / The maximum amplitude of a vehicle's forward/backward oscillation. / (electricity) A sudden electrical spike or increase of voltage and current.

(intransitive) To rush, flood, or increase suddenly. / To accelerate forwards, particularly suddenly.

A type of dedicated field hospital unit designed to be quickly set up as close to a combat zone as possible to facilitate the immediate treatment of wounded personnel.

Surgery on any part of the nervous system, especially the brain; neurosurgery. / (uncountable, idiomatic) Something that is overly complex, detailed or confusing.

Of, relating to, used in, or resulting from surgery. / (figuratively) Precise or very accurate. / (figuratively) Excruciatingly or wearyingly drawn-out

capable of lowering the surface tension of a liquid

(physics) the effect on the surface of a liquid that makes it behave as a stretched elastic membrane; it is caused by unbalanced intermolecular forces / (physics) a measure of this effect

(historical) A light horse-drawn carriage with forward-facing seats accommodating two or four people, popular in the United States; a motorized carriage of similar design.

(US politics) An occurrence that unexpectedly comes to public attention just prior to a November election, especially a presidential election, and that is likely to affect the outcome.