From in- + rush.

Noun

• IPA: /ˈɪn.ˌɹʌʃ/

Verb

• IPA: /ˌɪn.ˈɹʌʃ/

inrush (plural inrushes)

1. A crowding or flooding in.
   • 1918 September–November, Edgar Rice Burroughs, “The Land That Time Forgot”, in The Blue Book Magazine, Chicago, Ill.: Story-press Corp., →OCLC ↗; republished as chapter IV, in Hugo Gernsback, editor, Amazing Stories, (please specify |part=I to III), New York, N.Y.: Experimenter Publishing, 1927, →OCLC ↗:

     As we swung around, the full force of the current caught us and drove the stern against the rocks; there was a thud which sent a tremor through the whole craft, and then a moment of nasty grinding as the steel hull scraped the rock wall. I expected momentarily the inrush of waters that would seal our doom; but presently from below came the welcome word that all was well.

   • 1960, P[elham] G[renville] Wodehouse, chapter XIV, in Jeeves in the Offing, London: Herbert Jenkins, →OCLC ↗:

     We found Pop Glossop in his pantry polishing silver, and put in our order. He seemed a little surprised at the inrush of such a multitude, but on learning that our tongues were hanging out obliged with a bottle of the best […]

2. The initial flow of electricity into a component when it is switched on.

• surge

• Russian: наплы́в

inrush (inrushes, present participle inrushing; simple past and past participle inrushed)

1. (obsolete) To rush in.
   • 1610, William Camden, translated by Philémon Holland, Britain, or A Chorographicall Description of the Most Flourishing Kingdomes, England, Scotland, and Ireland, […], London: […] [Eliot’s Court Press for] Georgii Bishop & Ioannis Norton, →OCLC ↗:

     The Ocean, ready to inrush upon them.