| Webster's Online Dictionary |
| Part of Speech | Definition | |
| Expression | 1. An algebraic expression which involves the impossible operation of taking the square root of a negative quantity; as, [root]-9, a + b [root]-1.[Websters]. | |
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| Expressions | Definition | ||
| Imaginary expression | An algebraic expression which involves the impossible operation of taking the square root of a negative quantity; as, [root]-9, a + b [root]-1. Source: Webster's Revised Unabridged Dictionary. | ||
Source: compiled by the editor from various references; see credits. | Top | ||