delta
noun
[ ˈdɛltə ]
• the fourth letter of the Greek alphabet ( Δ, δ ), transliterated as ‘d’.
• a code word representing the letter D, used in radio communication.
• a difference between two things or values.
• "there's a delta between perception and reality"
delta
symbol
• variation of a variable or function.
• a finite increment.
• the discriminant of a quadratic equation.
• declination.
Origin:
Greek, from Phoenician daleth .
delta
noun
• a triangular tract of sediment deposited at the mouth of a river, typically where it diverges into several outlets.
• "the Nile delta"
Origin:
mid 16th century: originally specifically as the Delta (of the River Nile), from the shape of the Greek letter (see delta1).
