π is used as a button or option marker, often to show a choice in a list or as a bullet point. The Apple artwork shows a round grey button with a darker outer ring and a lighter raised centre.

U+1F518
As a Coupang Partners affiliate, this site earns a commission from qualifying purchases.
The name comes from radio buttons, the round selection circles in forms and apps. People use π to mark options, start list items, or suggest pressing a button. It has no common slang meaning and is mostly decorative or structural.
Pick one π Friday π Saturday
π Fees due Monday π Bring ID card
Just press the π and it starts
Menu π Tea π Coffee π Juice
| π vs βͺ | βͺ is a flat white circle, while π looks like a raised grey button. |
|---|---|
| π vs β« | β« is a plain black dot, while π has a ring and a lighter centre like a control. |
| Name | radio button |
|---|---|
| Codepoints | U+1F518 |
| Category | Symbols |
| Keywords | button, geometric, radio |
Find emojis by name or keyword (e.g. "smile", "heart", "fire").
32, 64, 128, 256 and 512px transparent PNGs. Get all five in one ZIP.
People emojis include five skin tones and gender variants as separate images.
Apple emoji artwork is Apple's property. Use for personal or non-commercial purposes; check Apple's policy for commercial use.
π is used as a button or option marker, often to show a choice in a list or as a bullet point. The Apple artwork shows a round grey button with a darker outer ring and a lighter raised centre.
It is named after the preset buttons on old car radios, where pressing one button released the others. Round option circles in digital forms work the same way, since choosing one clears the rest.
No. It is mainly used as a button, option marker or bullet point.
Yes, every PNG has a transparent background.