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Delta is the fourth letter of the Greek alphabet and has various uses in mathematics, science, and other fields. Learn about its history, pronunciation, numeral value, and related symbols such as delta particles and delta function.
Learn the history and usage of the most widely used set of clear-code words for communicating the letters of the Roman alphabet, such as Alpha, Bravo, Charlie and Delta. The code words are also known as NATO spelling alphabet, ICAO phonetic alphabet and radiotelephony spelling alphabet.
Delta Delta Delta (ΔΔΔ), also known as Tri Delta, is a global women's fraternity and Greek life organization founded in 1888. Learn about its history, symbols, philanthropy, and membership pins.
Learn about the history and usage of the NATO phonetic alphabet, which is also known as the ICAO spelling alphabet, and how it differs from other military alphabets. See tables of the alphabet words and their pronunciation for different services and nations.
Delta can refer to a letter, a river mouth, an airline, a music style, a mathematical symbol, and many other things. Learn about the different meanings and uses of delta in various fields and contexts from this Wikipedia article.
Learn how the Greek letter rho (Ρρ) and other Greek letters are used as symbols for constants, functions, variables, and more in various fields of study. See the typography, history, and variations of Greek letters in mathematical notation.
This was renamed to LATIN SMALL LETTER DELTA [2] and added to Unicode as U+1E9F [3] when Unicode 5.1 was released on 4 April 2008. U+018D ƍ LATIN SMALL LETTER TURNED DELTA is a nonstandard symbol in the International Phonetic Alphabet for a voiced "labialized" alveolar or dental fricative.
D is the fourth letter of the Latin alphabet and represents the voiced alveolar plosive /d/ in most languages. It has various origins, meanings and forms in different writing systems, such as Roman numerals, unit prefixes, school grades and currency codes.