Welcome to my Math Dictionary list of words that start with J.

There aren't many words on this page. Let me know if you find more J words for Math and I'll add them to the collection. Math Words That Start With J: See the printable math dictionary at the bottom. Online ABCs, too.

Joint Probability - the probability of event A and event B happening at the same time.

Joint Probability Function - a function that gives the probability that each of two or more random variables takes at a particular value.

Joint Variation - a variation in which the values of one variable depend upon those of 2 or more variables.

Jordan Curve - a simple closed curve.

Jordan Matrix - a matrix whose diagonal elements are all equal (and nonzero) and whose elements above the principal diagonal are equal to 1, but all other elements are 0.

Joule - a unit of energy or work.

Julia Set - the set of all the points for a function of the form Z^2+C. The iterations will either approach zero, approach infinity, or get trapped.

Jump Discontinuity - a discontinuity in a function where the left and right-hand limits exist but are not equal to each other.

As with the word joint, most of our Math words mean the same thing that they mean in other life situations. It's good to show that to the children so that the words are easier to learn.

Other words like Joule and Jordan are often named after the person who invented a thing. A bit of a historical story can help the children remember the inventor and the meaning of the word.

You can download this free Math dictionary to have a complete list of definitions.

## Free Printable Math Dictionary

You can print and keep these Math definitions as a glossary in your binder or a file folder. You can also download it to your tablet or bookmark this page. See the alphabetical links below for more online Math words. Mary Fifer (Webmaster, PrintNPractice.com)

Mary Fifer, BSBA is webmaster, author, and researcher at PrintNPractice.com. She has created elementary school practice exercises using digital interactive worksheets. Printable and perfect for today's teachers, tutors, homeschoolers, and students!