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≘

corresponds to

Corresponds To

The correspondence symbol ≘ links two expressions under a stated relation instead of declaring them equal. It can look like equals with an arc above the bars; in mathematical writing, the surrounding notation must make that relation clear.

Text symbol

Search it as: correspondence symbol · equals with an arc
Shows up in: Anything that takes text · its shape is whatever your font draws

What ≘ means

It links two expressions under a particular rule. It does not mean strict equality; the surrounding definitions must show what kind of correspondence is intended.

Unicode names ≘ “Corresponds To” and ≙ “Estimates,” but its character chart also lists “corresponds to” as a description for ≙. Those labels overlap; follow the notation your source defines rather than assuming the similar signs mean the same thing.

Formal mathematical notation; the sign depends on a relation defined in its surrounding context.

Do not use ≘ where you mean strict equality; use = for that.

Don't confuse it with

≙

Estimates

The ≘ vs ≙ difference is the upper mark: ≘ has a curved arc, while ≙ has a pointed wedge.

≈

Almost Equal To

≈ means approximately equal; ≘ marks correspondence. The first signals closeness of value, the second a defined relation.

Questions people ask

Why does ≘ show as a box on some devices?

Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.

How to type ≘

Windows (Word)

Alt+XType 2258, then Alt+X to get ≘.

Windows

Win+Rrun charmap for the full table, or use the emoji picker's Ω symbols tab (Win + .).

macOS

Control+Command+SpaceOpen the character viewer and search “corresponds to”.

Linux

Ctrl+Shift+UType 2258, then Enter or Space.

HTML

≘

CSS

\2258

Codes and encoding1 code points

HTML decimal

≘

HTML hex

≘

CSS content

content: "\2258";

Each escape is closed by the next backslash; a trailing space is needed before a literal hex digit.

URL encoded

%E2%89%98

On screen

Code points

JS .length

UTF-8 bytes

A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.

Families this belongs to

Maths & numbers1,835 symbols

1️⃣📏📐✖️➕➖➗🟰♾️#️⃣*️⃣0️⃣