DIGAMMA
Digamma
Digamma is an archaic letter of the Greek alphabet, which originally stood for the sound and later remained in use only as a symbol for the number "6". Whereas it was originally called wau, its most common appellation in classical Greek is digamma, while, as a numeral, it was called episēmon during the Byzantine era. Today, the numeral is often called stigma, after the value of a Byzantine Greek ligature σ-τ, which shares the same shape and was used as a textual ligature in Greek print until the 19th century.The above text is a snippet from Wikipedia: Digamma
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digamma
Noun
The above text is a snippet from Wiktionary: digamma
and as such is available under the Creative Commons Attribution/Share-Alike License.