x
299
9.1
- noun
- /ɛks/
:
equis
- What did the x-ray show?
- solve for x
- x axis
- x =
So when when X happens, then Y gets this.
- So when when X happens, then Y gets this.
- The first thing is to solve for Y or X in either equation.
- I am the portrait of Madam X by John Singer Sargent.
- And the two reagents are RH and X dot OK.
Examples
-
We needed a coffin because they aren't X-rayed.
-
- They just sent over the x rays.
-
Why did Dr. Cho order a head X-ray when the man was bitten on the hand?
-
In algebra, we often use x to represent an unknown value in equations.
-
The location of the point on the graph is determined by the x coordinate.
-
On the treasure map, the spot marked with an x indicates where to dig.
Synonyms
494
4.5
The 24th letter of the alphabet written as X
Compounds
- Specialized
12
3.3
A machine that uses X rays to take pictures of the inside of the body or of bags
5
3.6
People born between the early 1960s and the late 1970s who come after the baby boomers
- US
4
3.9
People born between the mid-1960s and early 1980s, often in the United States and Canada
- Specialized
2
3.9
A cell part that carries genes, present once in males and twice in females and affecting traits related to sex
- Specialized
1
3.0
Special film that records pictures made by X-rays to show bones or the inside of objects
- Specialized
1
7.1
A way X-rays scatter from the atoms in a crystal to show its structure
- Specialized
A way a strong gene on the X chromosome causes a trait in children who inherit it
- Specialized
A gene on the X chromosome that causes traits or disorders passed on by that chromosome
- Specialized
A pattern where a gene on the X chromosome causes males to have a trait and females to be carriers
- Specialized
Serious immune disease in boys caused by a gene change on the X chromosome that prevents T cells from developing
- Specialized
A serious inherited disease in baby boys that stops their immune system working
- Specialized
A tail design for an aircraft with four moving parts in an X shape that help control its direction
Surface Forms
Etymology
X is the 24th letter of the alphabet and looks like two crossing lines, so people long ago used it as a quick mark for mistakes or to sign a paper. Mathematicians later chose x to stand for an 'unknown' value because its short, sharp shape stands out, which is why we still use x for both a mark and an unknown.