Is there a word that means 'an unknown phenomenon or concept'? Is it really referred whit the one letter word 'X'?

closed as not constructive by Matt E. Эллен, FumbleFingers, cornbread ninja 麵包忍者, Mitch, MrHen Apr 5 '12 at 4:59

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    thingamajig, whatsit – GEdgar Mar 30 '12 at 21:28
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    There are so many words. Have a look at thing in the thesaurus. Also anything – Matt E. Эллен Mar 30 '12 at 21:32
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    @GEdgar - Very intersting! Are they fractal words? – user19148 Mar 30 '12 at 21:36
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    Can you give a lot more ...content to your questions? As is, it's difficult to know what you're thinking about. Give more details or an example. – Mitch Mar 30 '12 at 21:36
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    I don't think this is constructive. OP clearly already knows X can be used in this way. If the unknown were a number, most people would call it N. If we knew something about it, we'd probably include that in the reference - an unknown substance, unidentified force, etc. – FumbleFingers Mar 31 '12 at 0:05

Perhaps consider conundrum ("a difficult question or riddle"), enigma ("something puzzling, mysterious or inexplicable"), and mystery ("something secret or unexplainable; unknown").

  • Wow!!!!! Perfect!!!!!!!!!! – user19148 Mar 30 '12 at 23:46

Maybe you mean an unknown, the definition being:

  1. an unknown person, quantity, or thing
  2. (Mathematics) a variable, or the quantity it represents, the value of which is to be discovered by solving an equation; a variable in a conditional equation 3y = 4x + 5 is an equation in two unknowns

And, yes, X is often used to stand for an unknown.

  • oops! You are right, it is 'an unknown', not 'any unnamed'. I edited the question. – user19148 Mar 30 '12 at 23:02