Identical To Symbol
≡ (Identical To) compares objects that are considered exactly the same.
U+2261
The symbol ≡ is commonly read as “Identical to.” It’s used in writing and technical contexts to express an exact match rather than a mere similarity.
Identical To Symbol Meaning
“≡” means “identical to” and indicates that two expressions are the same in a precise sense. In math and logic, it often signals exact equivalence under a strict rule (for example, when the components match perfectly or when two expressions are interchangeable in the same formal system). Compared with symbols used for approximate or general equivalence, ≡ is typically reserved for stronger “exact match” meanings. You’ll also see it in technical documentation and writing where authors want to emphasize that the compared items should be treated as the same.
Common uses
- •In math proofs and formal statements to indicate strict identity or equivalence under a defined rule
- •In technical writing to emphasize two quantities or definitions are exactly the same
- •In documentation and specifications when mapping one term or expression directly to another
- •In code comments or notes to stress that two values must match precisely
- •In educational materials to distinguish exact identity (≡) from weaker equivalence
Examples
≡ Identical To Symbol
- ≡x ≡ x
- ≡f(a) ≡ f(a)
- ≡A ≡ B (by definition)
- ≡p ≡ q under the given constraints
- ≡This expression ≡ that expression after substitution
Variations
Ready to copy
Technical codes
| Unicode | U+2261 | |
| HTML Entity | ≡ | |
| HTML Code | ≡ | |
| CSS | \2261 |
FAQ
What does ≡ mean?
≡ is read as “Identical to” and is used to indicate an exact, strict match or exact equivalence under a defined formal sense.
How do I type ≡ on a keyboard?
You can copy it from this page. Many systems also support Unicode input or character pickers; otherwise use the provided HTML/CSS/JavaScript escapes.
What is the HTML entity for ≡?
The HTML entity is ≡.
How do I use ≡ in CSS or JavaScript?
CSS escape: \\2261. JavaScript escape: \\u{2261}.