The letter X.
An example of X is the letter that ends the word "flex."
- the twenty-fourth letter of the English alphabet: from a western form of the Greek alphabet
- any of the speech sounds that this letter represents, as, in English, the (ks) of lax, (gz) of exact, (k?) of anxious, (g?) of luxurious, or (z) of xylophone
- a type or impression for x or X
- the twenty-fourth in a sequence or group
- an object shaped like
- of x or X
- twenty-fourth in a sequence or group
- shaped like
transitive verbx-ed or x'd, x-ing or x'ing
- to indicate (one's choice or answer) by or as by marking with an
- to delete or cancel (written or printed matter) with or as with one or more 's: usually used with out
- the first of a set of unknown quantities, y usually being second
- a variable
- an abscissa
- by (in indicating dimensions): 3 ft x 4 ft
- the power of magnification (in optical instruments)
- Math. times
- a mark shaped like an used:
- to represent the signature of a person who cannot write
- to indicate a particular point on a map, diagram, etc.
- as a symbol for a kiss in letters, etc.
- to indicate the degree of fineness of flour, sugar, etc.
- the Roman numeral 10: XX = 20, XXX = 30: X before a greater Roman numeral expresses a number 10 less than that numeral (e.g., XC = 90): with a superior bar (?), 10,000
- a person or thing unknown or unrevealed
- a former film rating meaning that no one under the age of seventeen is to be admitted
X's and O's
Origin of Xsee XP Christ: used also in comb., as in Xmas
- Genetics crossed with
- Elec. reactance
nounpl. x's, or X's also xs or Xs
- The 24th letter of the modern English alphabet.
- Any of the speech sounds represented by the letter x.
- The 24th in a series.
- Something shaped like the letter X.
- A mark inscribed to represent the signature of one who is unable to sign one's name.
- An unknown or unnamed factor, thing, or person.
transitive verbx'd, x'ing, x's, or X'd X'ing X's
- To mark or sign with an X.
- To delete, cancel, or obliterate with a series of X's. Often used with out.
roman numerals, Sundial
Sundials indicate the time of day when a pointer casts a shadow onto a calibrated dial.
- The symbol for reactance
- also x The symbol for the Roman numeral 10.
- A symbol for the word cross. Used in combination, as in Xing for crossing or motoX for motocross.
- Christ (Greek &KHgr;&rgr;&igr;&sgr;&tgr;&ogr;&sfgr;, Khristos )
- or x ex
- ex dividend
- or x experimental
- a. extremeb. extremely
(lower case, upper case X)
- Forms plurals of ‘u’-terminal nouns (and, very rarely, some others), chiefly of French origin.
From the French plural suffix -x.
X is prototypically pronounced [ks] in English; it therefore serves as a convenient shorthand for the digraphs (cs, ks, etc.) or trigraphs (cks etc.) that would otherwise represent that consonant cluster.
- Alternative form of X.
- prefix used for CCITT-ratified (UN) international telecom standards on e-mail
x - Computer Definition
- In mathematics, the symbol for an unknown quantity, person, factor, or thing. X is the first in a set of two or three unknowns comprising x, y, and z. In telecommunications, for example, xDSL refers to any of a group of Digital Subscriber Line services. See also x-axis, xDSL, y, and z.
- In mathematics, times. For example, 3
(1) (eXit) To exit, close or delete. See X button.
(3) (times the original) A performance rating for optical drives, based on rotation speed (RPM) of the platter. Each "x" means "times the speed of the first specification," thus 10x means 10 times as fast as the original drive. See CD-ROM drives and DVD drives.
(4) (x-) The prefix used to describe a MIME type. For example, x-pdf and x-gzip refer to PDF and Gnu ZIP file formats, respectively. See MIME type.
(5) A prefix for cross; for example, x-platform means "cross-platform." See cross platform.
(6) (Mac OS X) X is the Roman Numeral for 10; thus OS X means "OS 10." See Mac OS X.
x - Legal Definition