Upsilon (US: / ˈ ʌ p s ɪ ˌ l ɒ n, ˈ (j) uː p-,-l ən /, UK: /(j) uː p ˈ s aɪ l ən, ʊ p-,-l ɒ n /; [1] [2] [3] [4] [5] [6] uppercase Υ, lowercase υ; Greek: ύψιλον ýpsilon) or ypsilon / ɪ p-/ [1] is the twentieth letter of the Greek alphabet.

Upsilon (uppercase/lowercase Υ υ), otherwise known as simply u, is the 20th letter of the Greek alphabet. It is used to represent the "u" sound in Ancient Greek and "i" in Modern Greek . In the system of Greek numerals , it has a value of 400.

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Upsilon Symbol in Greek Alphabet. Upsilon (uppercase Υ, lowercase υ) is the 20th letter of the Greek alphabet. In the Greek number system, this letter was taken as the symbol of the number 400. Upsilon was derived from the Phoenician wāw meaning "hook". And it was the sixth letter of the Phoenician alphabet.

2025年2月14日 · upsilon (plural upsilons or upsila) The twentieth letter of Classical and Modern Greek; the twenty-second letter of Old and Ancient Greek. An upsilon meson, or bottomonium.

The Upsilon alphabet consists of 24 letters, including Upsilon, and is the fifth letter in the Greek alphabet’s sequence. What is the historical origin of the Upsilon letter? The Upsilon letter originated from the Phoenician letter Waw, evolving over time into the Greek letter “Υ” or “υ”.

It uses points, breathing, and accents sparingly; iota and upsilon sometimes have diaeresis.

Upsilon (Υ, υ) or ypsilon is the 20th letter of the Greek alphabet. In the system of Greek numerals, Υʹ has a value of 400. It is derived from the Phoenician waw.

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short upsilon like the u in French tu; long upsilon has the same sound, but held twice as long