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Substitution vs X - What's the difference?

substitution | x |

As a noun substitution

is substitution, replacement.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

substitution

English

Noun

(en noun)
  • the act of substituting or the state of being substituted
  • a substitute or replacement
  • (chemistry) (especially in organic chemistry) the replacement of an atom, or group of atoms, in a compound, with another

    • Derived terms

    * substitution cipher * substitution reaction * substitution rule

    Anagrams

    *

    x

    Translingual

    {{Basic Latin character info, previous=W, next=Y, image= (wikipedia X)

    Etymology 1

    Letter

  • The twenty-fourth letter of the .
    • See also
    (Latn-script)

    Cardinal number

    (mul-number)
  • The number 10.

    • Symbol

    (mul-symbol)
  • A symbol of the IPA, representing a voiceless uvular fricative.
  • strike

    • Etymology 2

    Possibly from skull and crossbones

    Symbol

    (mul-symbol)
    • Derived terms
    * XXX

    See also

    {{Letter , page=X , NATO=X-ray , Morse=–··– , Character=X , Braille=? }} Image:Latin X.png, Capital and lowercase versions of X , in normal and italic type Image:Fraktur letter X.png, Uppercase and lowercase X in Fraktur Roman numerals ----