Language: en
Meaning: (idiomatic)An unknown or hard-to-define influence; afactorwith unknown or unforeseeable consequences.1992, Lia Matera,Prior Convictions, page121:We slid into our office, past two women discussing the "X factor," an apparently undefined quality their firm felt they lacked.1999, Joel R. DeLuca,Political Savvy: Systematic Approaches to Leadership Behind the Scenes, page75:The map can be misleading. It can appear to contain all the relevant information, but in real life, there is always anX factor.2007, Tasmina Perry,Daddy's Girls, page12:And put him on an LA film set and he glowed with that indefinableX-factorthat agents the world over wished they could bottle.2007December 31, Fareed Zakaria, “The Rise of a Fierce Fragile Superpower”, inNewsweek,page38:Whether it's trade, global warming, Darfur or North Korea, China has become the newxfactor, without which no durable solution is possible.; (idiomatic)A special talent, ability or quality or its indefinable cause.; Prothrombinase.Synonym:factor X; (astrophysics)Theproportionalityconstantwhich converts CO emission line brightness to molecular hydrogen mass.
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