Oxford spelling (or Oxford English Dictionary spelling) is the spelling used by Oxford University Press (OUP), including in its Oxford English Dictionary (OED), and other publishers who are "etymology conscious," according to Merriam-Webster. Apart from OUP, British dictionary publishers that use it include Cassell, Collins and Longman. In digital documents it may be indicated by the language tag en-GB-oed.
Oxford spelling can be recognized by its use of the suffix ‑ize instead of -ise: organization, privatize and recognizable instead of organisation, privatise and recognisable. The spell...