We found 6 dictionaries that define the word irrational numbers:

General (4 matching dictionaries)

1. irrational numbers: Collins English Dictionary
2. irrational numbers: Vocabulary.com
3. irrational numbers: Wiktionary
4. Irrational numbers: Wikipedia, the Free Encyclopedia

Computing (1 matching dictionary)

5. Irrational numbers: Encyclopedia

Science (1 matching dictionary)

6. A Glossary of Mathematical Terms (No longer online)

(Note: See irrational_number as well.)

Definitions from Wiktionary (irrational number) ▸ noun:  (mathematics) Any real number that cannot be expressed as a ratio of two integers. ▸ Also see irrational_number ▸ Words similar to irrational numbers ▸ Usage examples for irrational numbers ▸ Idioms related to irrational numbers ▸ Wikipedia articles (New!) ▸ Words that often appear near irrational numbers ▸ Rhymes of irrational numbers ▸ Invented words related to irrational numbers