≉

Math Operator 70

Unicode
U+2249
Category
Math
HTML Entity
≉
CSS
\2249
The ≉ symbol, formally known as "Not Almost Equal To," is a mathematical operator consisting of an approximately equal sign intersected by a forward slash. It is primarily used in mathematics and the sciences to explicitly state that two values or expressions are not roughly equivalent to one another. Beyond textbooks, you might see it used playfully in online discussions to emphasize that two concepts or items are "not even close" to being the same.

How to Type

Windows
Alt + 8777 (on numeric keypad) or Win + . then search "not almost equal"
macOS
Control + Command + Space then search "not almost equal"
Linux
Ctrl+Shift+U then type 2249 and press Enter
HTML
≉ or ≉

In Programming

Mainstream programming languages generally do not use ≉ as a built-in operator, relying instead on ASCII combinations like `!=` for exact inequality. It is heavily used in LaTeX using the `\napprox` command to format academic papers and mathematical proofs.

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Tags

LaTeX not approximately Unicode U+2249 crossed approximately equal inequality math negation mathematics negation not almost equal not even close not roughly equal relation slashed tilde equals

Related Symbols

± Plus Minus Sign × Multiplication Sign ÷ Division Sign ≠ Not Equal To ≈ Approximately Equal To ∞ Infinity √ Square Root ∑ Summation ∫ Integral π Pi ≤ Less Than or Equal To ≥ Greater Than or Equal To