› used to
represent
the second of two
numbers
or
names
that are not
known
or
stated
, when the first is
represented
by "x": If 2x = 3y and x = 6, then y = 4. The
children
on
trial
were referred to as
child
X and
child
Y.Mathematical symbols

(Definition of y noun from the Cambridge Advanced Learner's Dictionary & Thesaurus
© Cambridge University Press)

Focus on the pronunciation of y
You are looking at an entry to do with Mathematical symbols, but you might be interested in these topics from the **Mathematics & arithmetic** topic area:

- Addition, subtraction, multiplication & division
- Averages
- Branches & types of mathematics
- Calculations & calculating
- Fractions
- Geometrical & mathematical instruments
- Geometrical shapes
- Geometry: bends, loops & curves
- Geometry: describing angles, lines & orientations
- Geometry: parts of geometrical shapes
- Geometry: properties of circles & curves
- Numbering & counting
- Numbers generally
- Numbers: cardinal, including nought & zero
- Numbers: groups of things according to number
- Numbers: ordinal
- Numbers: single, double & multiple
- Numerical relationships
- Statistics
- Tables, graphs & diagrams
- Terms for numbers

“y”: synonyms and related words:

an official document signed by two people before they get married that says what will happen to their possessions and/or children if they divorce (= officially stop being married)

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