x

x

x¹ or X [eks]

n.

pl. X's, x's

1. the twenty-fourth letter of the English alphabet: from a western form of the Greek alphabet

2. any of the speech sounds that this letter represents, as, in English, the (ks) of lax, (gz) of exact, (ksh) of anxious, (gzh) of luxurious, or (z) of xylophone

3. a type or impression for x or X

4. the twenty-fourth in a sequence or group

5. an object shaped like X

adj.

1. of x or X

2. twenty-fourth in a sequence or group

3. shaped like X

x² [eks]

vt.

x-ed or x'd, x-ing or x'ing

1. to indicate (one's choice or answer) by or as by marking with an X

2. to delete or cancel (written or printed matter) with or as with one or more X's: usually used with out

n.

one's choice or answer (on a ballot, test, etc.)

x³ [eks]

n.

Math.

1. the first of a set of unknown quantities, y usually being second

2. a variable

3. an abscissa

x⁴

abbrev.

extra

x⁵

symbol

1. by (in indicating dimensions) [3 ft x 4 ft]

2. the power of magnification (in optical instruments)

3. Math. times