surge UK /sɜːd͡ʒ/US /sɝd͡ʒ/noun 8verb 4forms 5 noun8 •A sudden transient rush, flood or increase.He felt a surge of excitement. •A sudden electrical spike or increase of voltage and current.A power surge at that generator created a blackout across the whole district. •[before a noun] A deployment in large numbers at short notice. •The swell or heave of the sea.He that doubteth is like the surge of the sea driven by the wind and tossed. — 1901 •A momentary reversal of the airflow through the compressor section of a jet engine due to disruption of the airflow entering the engine's air intake, accompanied by loud banging noises, emission of flame, and temporary loss of thrust. •The maximum amplitude of a vehicle's forward/backward oscillation. •The tapered part of a windlass barrel or a capstan, upon which the cable surges, or slips. •(no longer used) A spring; a fountain.all great rivers are gorged and assembled of various surges and springs of water — 1523 verb4 •To rush, flood, or increase suddenly.Toaster sales surged last year. •To accelerate forwards, particularly suddenly.A ship surges forwards, sways sideways and heaves up. •To experience a momentary reversal of airflow through the compressor section due to disruption of intake airflow.Use of maximum reverse thrust at low speeds can cause the engine to surge from ingesting its own exhaust. •To slack off a line. formssurged · surging · surges · surgeth · surgest