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Delta (letter) - Definition |
| Related Words: Rd, Rfd, Acknowledgment, Advice, Airmail, Alphabet, Answer, Art, Article, Autograph, Back, Beard, Belly, Billet, Blueprint, Body, Cap |
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Delta (upper case Δ, lower case δ) is the 4th letter of the Greek alphabet. In the system of Greek numerals it has a value of 4.
A river delta is named after the letter delta because it has roughly the triangular shape of the upper-case delta.
The upper-case letter Δ is used as the symbol for:
Deltas are the second lowest caste in Aldous Huxley's dystopic satire Brave New World.
The lower-case letter δ is used as the symbol for:
- A microscopic change in the value of a variable in mathematics or science.
- The Kronecker delta in mathematics.
- The Dirac delta function in mathematics.
- A mark for deletion in proofreading. The usage is said to date back to classical times.
Letters that arose from Delta include the Roman D and the Cyrillic letter De.
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Example Usage of (letter) |
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iranangel: RT #IranElection #Iran - Karroubi Open Letter Responds to Threat of Arrest I Will Serve the People http://bit.ly/8L3eZr RT @Artemis_ia |
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EmmaaaX_: @BelchBabyy letter about a jab on a sunday, i dont get post on a sunday? |
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MaryJo_oh: RT @Bluefinch: An Open Letter to Simon Cowell, Record Labels and the UK Media http://ow.ly/NN3O #RATM |
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