Derailleur gears operates the lever while pedalling, the change in cable tension moves the chain-guide from side to side, "derailing" the chain onto different sprockets. For more information about the choice of particular gear ratios and sprocket sizes, see Bicycle gearing. "Derailleur" is a French word, spelled "dérailleur" in French, derived from the derailment of a train from its tracks. Its first recorded use was 1930. At least one notable bicycle industry author has attempted to promote the anglicized spelling of "derailer". As of 2013, however, neither Merriam-Webster nor the Oxford English Dictionary has an entry for "derailer". Various derailleur systems were
Québécois (word) Québécois (word) Québécois (pronounced ; feminine: Québécoise (pronounced ), ' (fem.: '), or (fem.: ) is a word used primarily to refer to a native or inhabitant of the Canadian province of Quebec, the majority of whom speak French as a mother tongue. It can refer to French spoken in Quebec. It may also be used, with an upper- or lower-case initial, as an adjective relating to Quebec, or to the French culture of Quebec. A resident or native of Quebec is usually referred to in English as a Quebecer or Quebecker. In French, Québécois or Québécoise usually refers to