Definition of "realise"

realise

verb
third-person singular simple present realises, present participle realising, simple past and past participle realised
1. Non-Oxford British English standard spelling of realize.
  Quotations
  In his submission to the UN, [Christof] Heyns points to the experience of drones. Unmanned aerial vehicles were intended initially only for surveillance, and their use for offensive purposes was prohibited, yet once strategists realised their perceived advantages as a means of carrying out targeted killings, all objections were swept out of the way.
  2013 June 7, Ed Pilkington, “‘Killer robots’ should be banned in advance, UN told”, in The Guardian Weekly, volume 188, number 26, page 6
  As the 1857 to Manchester Piccadilly rolls in, I scan the windows and realise there are plenty of spare seats, so I hop aboard. The train is a '221'+'220' combo to allow for social distancing - a luxury on an XC train as normally you're playing sardines, so I make the most of it.
  2020 December 2, Paul Bigland, “My weirdest and wackiest Rover yet”, in Rail, page 68