
List of Math Terms That Start With U With Meanings and Examples
Maths is one subject with lots of recurring terms and abbreviations, which every child cannot get in one go. Also, without knowing these terms, it's really difficult to understand certain Maths concepts and solve problems. So, what's the solution?
We are here to make this challenging task of learning new Maths words easier for children by creating a Maths glossary. In this article, we will learn Maths words that start with U. We have also included a brief description of each of them to help you remember them easily!
10 Maths Words Starting with the Letter U
Let’s get started with new Maths words that start with u.
Maths vocabulary – words starting with ‘u’
Unit: It is a standard quantity used in the measurement. For example, the universal unit of length in metric is the meter, while the units of time are second, minute, hour, etc.
Unitary Method: This is a Mathematical method used in algebra to solve problems involving quantity, where the given quantity is first calculated with respect to ‘one’ unit.
Unequal: In Mathematics, unequal represents the terms, sets, or conditions which are not equal. It is denoted by '≠'.
Undefined Term: In Maths, if the denominator of a fraction is 0, then that term/fraction is called undefined and cannot be solved.
Unlike Fractions: These are fractions with different denominators, no matter what is the numerator. For example, the fractions 11/5 and 5/19 are unlike fractions.
Unit Fraction: A fraction that has 1 in its numerator and any natural number in its denominator. Note that the denominator cannot be 0 or negative integer. For example, 1/8, 1/5, etc.
Undecagon: It is a 2-D polygon with 11 sides and 11 angles. It is also called Hendecagon.
An undecagon
Unknown Variable: In algebra, a variable (usually x, y, or z) is called unknown when its value is not known. We need to find its value.
Unlike Terms: In algebra, unlike terms are defined as the ones which contain different variables or the same variables with different exponents. For example, 3x + 3x2, 4x3 + 5y4, etc.
Universal Set: A set that contains all the elements of the given sets, without any repetition of elements is called a universal set. It is denoted using the symbol U. For example, if A and B are two sets such that A = {1, 2, 3, c} and B = {a, b, c}, then the universal set is given by U = {1, 2, 3, a, b, c}.
Conclusion
These Maths dictionary words starting with the letter ‘u’ introduce kids to many important words and make it really easy for them to memorise. However, it can sometimes become confusing to learn so many words together. So, students should keep repeating words until they become clear.
FAQs on Math Words That Start With U in Mathematics
1. What are some common math words that start with U?
Some common math words that start with U include unit, union, universal set, undefined, upper bound, uniform distribution, unit circle, unlike terms, unit fraction, and univariate. These terms appear in algebra, geometry, set theory, statistics, and calculus. For example, “unit” is used in measurement, while “union” is a key concept in set theory.
2. What is a unit in math?
A unit in math is a standard quantity used to measure a value. Units describe what a number represents, such as:
- Length: meters, centimeters
- Mass: kilograms, grams
- Time: seconds, hours
3. What is the union of two sets?
The union of two sets is the set of all elements that are in either set or in both sets. It is written as A ∪ B.
- If A = {1, 2, 3}
- And B = {3, 4, 5}
4. What is a universal set in mathematics?
A universal set is the set that contains all elements under consideration in a particular context. It is usually denoted by U.
- If U = {1,2,3,4,5}
- And A = {1,3}
5. What does undefined mean in math?
In math, undefined means a value has no meaning or does not exist within the rules of mathematics. A common example is division by zero.
- 5 ÷ 0 is undefined
6. What is an upper bound in mathematics?
An upper bound of a set is a value that is greater than or equal to every element in that set. For example:
- For the set {2, 4, 6}
- 8 is an upper bound
7. What is a unit circle in trigonometry?
The unit circle is a circle with radius 1 centered at the origin (0,0). Its equation is x² + y² = 1. The unit circle is used to define sine and cosine values for all angles in trigonometry.
8. What is a unit fraction?
A unit fraction is a fraction with numerator 1 and a positive integer denominator. It has the form 1/n.
- Examples: 1/2, 1/5, 1/10
9. What are unlike terms in algebra?
Unlike terms are algebraic terms that do not have the same variables raised to the same powers. For example:
- 3x and 5x are like terms
- 3x and 3y are unlike terms
10. What does univariate mean in statistics?
In statistics, univariate refers to data that involves only one variable. For example, analyzing only students’ heights is a univariate analysis. Common univariate measures include:
- Mean
- Median
- Mode
- Standard deviation





















