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noun 
  1. The name for the fourth letter of the modern Greek alphabet Î, δ.
  2. A landform at the mouth of a river where it empties into a body of water. w:River delta, Wikipedia has a detailed description.
  3. (phonetics) δ In the International Phonetic Alphabet, IPA, the symbol that represents the voiced dental fricative, the hard th in the English word father. Usu. represented by the Icelandic eth, eth/edh (í°).
  4. (mathematics) A change in some quantity.
  5. (context, computing, colloquial) A small but noticeable effect, compare with epsilon.
This will slow the main code path down, but only by .
  1. (context, computing) The set of differences between two versions of a file.
When you update the file, the system will only save the deltas.
  1. (context, surveying) The angle subtended at the center of a circular arc.
  2. The letter D in the ICAO spelling alphabet, which assigns words to letters of the alphabet.
Etymology: From Greek (delta).


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