codeshare

== English == === Etymology === From code +‎ share, because of the change in the flight's two-letter airline identity code. One aircraft will have two or more codes and flight numbers. === Noun === codeshare (plural codeshares) (aviation) An agreement whereby an airline buys space on another airline and markets the extra space as its own. Often used to increase a route network without the costs of running a full service. === Verb === codeshare (third-person singular simple present codeshares, present participle codesharing, simple past and past participle codeshared) (aviation, ambitransitive) To buy space on (a flight) in this way. === Anagrams === deroaches