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X1 **, x** plural X's, x's

1## letter

[uncountable and countable]SLA the 24th letter of the English alphabet

2HMN## number

[countable] the number 10 in the system of roman numerals

3## mathematics

[uncountable] technicalHM a letter used in mathematics to represent an unknown quantity or value :

if 3x = 6, x = 2

4## on school work

SE [countable] a mark used on school work to show that a written answer is not correct

5## when voting

PPV [countable] a mark used to show that you have chosen something on an official piece of paper, for example when voting

6## on a letter

TCM [countable] a mark used to show a kiss, especially at the end of a letter :

Love, Cindy XXX

7## film

[singular, uncountable]AMF used in the past to describe a film that was officially approved as only suitable for people over 18 [= 18] ➔ X-rated

8## unknown/secret name

[uncountable] a letter used instead of someone's or something's real name because you want to keep it secret or you do not know it :

At the trial, Ms X said that she had known the defendant for three years.

9## when signing your name

[countable] a mark used instead of a signature by someone who cannot write

10## X number of people/things

used to say that there are a number of people or things when the exact number is not important

11## X marks the spot

used on maps in adventure stories to show that something is buried in a particular place

Definition of X from the Longman Dictionary of Contemporary English within

the topic MATHS

the topic MATHS

angle
arc
area
axis
base
C
calculator
constant
contain
cos
curve
cut
diameter
dimension
domain
equal(a)
equal(v)
express
expression
face
figure
formula
function
graph
grid
log
math
mathematics
matrix
mean
minute
multiply
N
number
parallel
percentage
pi
plane
plus(n)
plus(a)
plus sign
power
proof
ratio
root
scale
section
segment
solid(a)
solid(n)
solution
solve
square(a)
square(n)
square(v)
square(a)
sum
term
value
variable
vector
vertical
volume
work
X

Show all entries from Topic: MATHS

Show all entries from Topic: MATHS