π means the blood type AB, and people use it for blood donation, medical info, or as the letters AB in names and words. The Apple artwork shows white letters AB on a red square button.

U+1F18E
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Common uses include blood donation posts, sharing your blood type, and blood type personality talk, which is popular in Japan and Korea. People also use it as a stand-in for the letters AB, such as initials or "abs" in fitness posts.
Urgent: need π positive donor at city hospital π©Έ
I'm π negative, pretty rare
Leg day done, π day tomorrow
Who else is π here
| π vs π °οΈ | π °οΈ is blood type A alone, while π shows both letters together. |
|---|---|
| π vs π ±οΈ | π ±οΈ is blood type B and is also used as a meme replacement for the letter B. |
| Name | AB button (blood type) |
|---|---|
| Codepoints | U+1F18E |
| Category | Symbols |
| Keywords | ab, blood, button, type |
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π means the blood type AB, and people use it for blood donation, medical info, or as the letters AB in names and words. The Apple artwork shows white letters AB on a red square button.
Yes, AB is the least common of the main blood types in most countries. That is why it shows up often in donor requests.
Yes, some people use it as a joke for abs in gym and fitness posts. The context usually makes it clear.
Yes, every PNG has a transparent background.