What's That Glyph? by emilyaviva

The symbol ™ stands, of course, for "trademark", but the related symbol ® stands for what kind of trademark?

Speaking of letters in circles, a circled U or K on a food product designates that it is kosher. What is the generic name for such a symbol? (Famously, the answer to this question was the source of controversy in the 2006 Scripps National Spelling Bee.)

Continuing the theme of letters in circles, the symbol ℗ (circled P) signifies a copyright on a sound recording. In this context, what does the letter P stand for?

The astronomical symbol for Pluto is the glyph ♇ (a combined letter P and L). The selection of this symbol was made easier because those letters are also the initials of what astronomer, whose search for the hypothetical "Planet X" led to the eventual discovery of Pluto?

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Speaking of combined characters, a combined question mark and exclamation point (‽), often represented as ?! when the special glyph is unavailable, is known as what?

The Greek letter tau (τ) traditionally represents the ratio of the circumference of a circle to its radius. What Greek letter traditionally represents half that value?

The sign ₽ was adopted in 2013 for what currency, despite said currency having muddled along, in one form or another, since the 14th century without a symbol?

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In May 2019, version 12.1 of the Unicode standard was released, which added a single symbol: a square ligature of the name of the current era of the Japanese calendar, Reiwa (㋿), which began that year on May 1st, when Emperor Akihito abdicated in favor of his son, whose personal name is what?

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The symbol ۝ signifies the end of an Ayah, many of which make up a Surah, which is a section of what book?

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The sign ℞ (often written as Rx) is used to symbolize a medical prescription, and more generally, the science of pharmacy. The sign is an abbreviation of what word, which in Latin means "take" (as in "take two tablets"), but in English is more likely to be found as an entry in a cookbook?

Speaking of medicine, the caduceus (☤), a winged staff surrounded by two serpents, is often confused with the symbol ⚕️, a single serpent entwining a plain staff. The former sign is often erroneously used as a symbol of medicine, but the latter sign is properly the medical one, called the rod or staff of what Greek god of medicine?

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The symbol †, which looks like a Christian cross, is often used like an asterisk to refer to an annotation, in which context it bears what non-denominational but martial name?