Wednesday, October 1, 2025

Why do we use ‘Rx’ for ‘prescription’?

Why does "Rx" stand for prescription when there's no "X" in the word?
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Why does 'Rx' abbreviate 'prescription'?

Why does "Rx" stand for prescription when there's no "X" in the word? The answer may trace to ancient symbols tied to healing gods.

Bottle of opened prescription pill bottle

I f you need to text your partner to ask them to pick up a prescription on the way home from work, you might type, "Can you pick up my Rx?" Despite the letter "X" appearing nowhere in the word "prescription," this has been a commonly used abbreviation since the 1920s. As with many linguistic questions, there's not a definitive origin story, but there are two theories, both going back to ancient times, with the advent of preparing and dispensing drugs associated with healing powers.

One theory: "X" is from the symbol for Horus, the ancient Egyptian god of healing, among other things. During a battle, Horus' evil uncle, Seth, plucked out Horus' left eye, tearing it apart. Thoth, the Egyptian god of magic, pieced it back together, added a little magic, and brought Horus' father, Osiris, back to life. And so the symbol of Horus ensures good health, warding off sickness.

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Copyright emoji

Copyright

Meaning: Shows the letter "C" surrounded by a circle, a symbol that denotes copyrighted material.


Evolution: The Copyright emoji ©️ — like the Registered ®️ and Trade Mark ™️ emojis — relates to legal protections for intellectual property. The emoji is also used to humorously claim ownership of something.


Usage: [Reply to a Tweet:] Hey, that was my joke! ©️๐Ÿ˜‚

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You Are Here

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Jennifer Freeman

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