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Rubidium is a chemical element with atomic number 37 and the symbol Rb. It is a soft, ductile, whitish-gray alkali metal. Rubidium had few applications until the 1920s, but since then the element has had wide variety of uses, from giving fireworks a purple color to a component of atomic

Hot dog has two primary meanings, that of a sausage and that of a person who is superior or expert, especially boastfully so. Both started as American slang in the 1890s, with one, the sausage, eventually moving into standard English. But despite these similarities, the two senses are etymologically unrelated.

Two bits, in American speech, literally means twenty-five cents, but it is also used more generally to refer to a small valuation or as an adjective meaning cheap or insignificant. How it came to mean these things is wrapped up in the history of money in North America. Bit itself

Roentgenium is a synthetic chemical element with atomic number 111 and the symbol Rg. All isotopes of the element are highly radioactive, with half-lives measured in seconds or minutes. Only a handful of roentgenium atoms have ever been created. It has no applications outside of pure research. It was first

(See also: blue moon) Every three or four months we are treated to a spate of news stories about how this month’s full Moon will be a supermoon. And in the summer and fall of 2024, we’ll get four supermoons in a row. But for the casual observer

The Pond is a jocular and understated way of referring to the Atlantic Ocean, often in the phrase across the pond. By reducing the tempestuous ocean to placid pond, it makes the ocean manageable and domestic, recognizing the cultural differences between Britain and America and Canada, while at the same

The United States government is often referred to as Uncle Sam, who is rendered pictorially as a white-haired, goateed man wearing a suit and top hat that are adorned with the stars and stripes. Perhaps the most famous image of Uncle Sam is James Montgomery Flagg’s WWI recruiting poster,

To swiftboat a politician is to dishonestly call their former military service into question, to falsely accuse them of exaggerating or even lying about their combat experiences. The term arose in the context of the 2004 U.S. presidential campaign, in which Democratic candidate John Kerry was a Vietnam veteran,

Rhodium is a hard, silvery-white metallic chemical element with atomic number 45 and the symbol Rh. Rhodium is quite rare, chiefly found as a component of platinum and nickel ores. It has a number of applications, including as a catalyst in chemical reactions, especially in automobile catalytic converters; in electrical

[Dredging this one up from the archives, originally published 16 August 2021.] Weird, as we most often use it today, is an adjective meaning strange, odd, or uncanny. But that’s a relatively new sense, only arising in the last two hundred years or so; the word, with a different

Intersectionality is an analytical framework for examining how an individual’s various identities interact to create discrimination or privilege. Originally conceived to examine how race and gender interact, intersectionality can take into account any number of factors, including ethnicity, class, sexuality, country of origin, religion, disability, age, and weight. For

The Pond is a jocular and understated way of referring to the Atlantic Ocean, often in the phrase across the pond. By reducing the tempestuous ocean to placid pond, it makes the ocean manageable and domestic, recognizing the cultural differences between Britain and America and Canada, while at the same

Winston Churchill is credited with coining a lot of pithy phrases, and many of these claims are false. The coining of the phrase iron curtain falls into a gray area. It is thought by many that Churchill coined the phrase in a 1946 speech in Fulton, Missouri, but the sense

The archetype of the cat lady is an old one, but the phrase is relatively new. The cat lady is typically portrayed as a middle-aged or elderly, unmarried woman who has a plethora of cats. The archetype can be positive or pejorative. The word crazy is often attached when the

Rhenium is a chemical element with atomic number 75 and the symbol Re. Its history and etymology are characterized by a series of errors and nationalistic feelings that overshadow the scientific achievement of its discovery. It is a dense, silvery-white metal with the highest melting point of all the elements