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  2. Greek alphabet - Wikipedia

    en.wikipedia.org/wiki/Greek_alphabet

    For many years the Greek alphabet was used by the World Meteorological Organization for naming North Atlantic hurricanes if a season was so active that it exhausted the regular list of storm names. This happened during the 2005 season (when Alpha through Zeta were used), and the 2020 season (when Alpha through Iota were used), after which the ...

  3. List of Greek letters - Wikipedia

    en.wikipedia.org/wiki/List_of_Greek_letters

    Alpha with grave and rough breathing: Archaic letter denoting the presence of /h/ prior to the vowel, with a normal or low pitch Ἇἇ: Alpha with circumflex and rough breathing: Archaic letter denoting the presence of /h/ prior to the vowel, with a high or falling pitch Ᾱᾱ: Alpha with macron: Archaic letter denoting a long vowel Ᾰᾰ ...

  4. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet before switching to Latin letters. In mathematical finance , the Greeks are the variables denoted by Greek letters used to describe the risk of certain investments.

  5. What do teens mean when they say ‘sigma’? - AOL

    www.aol.com/news/teens-mean-sigma-000158935.html

    Some know “sigma” as the 18th letter of the Greek alphabet but ... “There’s this group of people who have this hierarchy for males — there’s ‘alpha’ and there’s ‘sigma ...

  6. Sigma - Wikipedia

    en.wikipedia.org/wiki/Sigma

    Sigma (/ ˈ s ɪ ɡ m ə / SIG-mə; [1] uppercase Σ, lowercase σ, lowercase in word-final position ς; Ancient Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In the system of Greek numerals , it has a value of 200.

  7. NATO phonetic alphabet - Wikipedia

    en.wikipedia.org/wiki/NATO_phonetic_alphabet

    This is an accepted version of this page This is the latest accepted revision, reviewed on 22 December 2024. Letter names for unambiguous communication Not to be confused with International Phonetic Alphabet. Alphabetic code words A lfa N ovember B ravo O scar C harlie P apa D elta Q uebec E cho R omeo F oxtrot S ierra G olf T ango H otel U niform I ndia V ictor J uliett W hiskey K ilo X ray L ...

  8. San (letter) - Wikipedia

    en.wikipedia.org/wiki/San_(letter)

    San (Ϻ) was an archaic letter of the Greek alphabet. Its shape was similar to modern M or Mu, or to a modern Greek Sigma (Σ) turned sideways, and it was used as an alternative to Sigma to denote the sound /s/. Unlike Sigma, whose position in the alphabet is between Rho and Tau, San appeared between Pi and Qoppa in alphabetic order. In ...

  9. List of Chi Omega chapters - Wikipedia

    en.wikipedia.org/wiki/List_of_Chi_Omega_chapters

    This is the list of Chi Omega chapters.Chi Omega's first series chapters (single-letter) are named for 24 of the Greek letters and assigned in an order customized to Chi Omega, approximating a reverse alphabetical order.