There are some amusing derivations of words and expressions.
Consider for example the expression “the dog days of summer”.
The dog days or dog days of summer are the hot, sultry days of summer. They were historically the period following the heliacal rising of the star system Sirius (known colloquially as the “Dog Star”), which Hellenistic astrology connected with heat, drought, sudden thunderstorms, lethargy, fever, mad dogs, and bad luck. They are now taken to be the hottest, most uncomfortable part of summer in the Northern Hemisphere.
The English name is a calque of the Latin dies caniculares (lit. “the puppy days”), itself a calque of the ancient Greek κυνάδες ἡμέραι kynádes hēmérai. The Greeks knew the star α Canis Majoris by several names, including Sirius “Scorcher” (Σείριος, Seírios), Sothis (Σῶθις, Sôthis, a transcription of Egyptian Spdt), and the Dog Star (Κῠ́ων, Kúōn).
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