The Greek letter delta.
- Delta is defined as the fourth letter of the Greek alphabet. It is shown in capital form with the symbol of an isosceles triangle (Δ) and in lower-case form with a circle with a tail on the top (δ).
An example of delta being used is the use of the capital delta symbol (Δ) in math equations to show a change of any quantity. For example: Δ = b² - 4ac
- The definition of a delta is a triangle-shaped deposit of sand, clay or silt at the mouth of a river.
An example of a delta is where the Nile River drains into the Mediterranean Sea.
- the fourth letter of the Greek alphabet (?, ?)
- something in the shape of a delta (?); specif., a tract of flat land, usually triangular, formed by deposits of soil and sand at the mouth of a large river
Origin of deltaClassical Latin ; from Classical Greek delta, of Semitic origin, originally , as in Classical Hebrew (language) d?leth, 4th letter of the alphabet, literally , door
- of, in, or from the Delta (see phrase below): Delta blues
- Chem. see alpha
- The fourth letter of the Greek alphabet. See Table at alphabet.
- An object shaped like a triangle.
- a. A usually triangular alluvial deposit at the mouth of a river.b. A similar deposit at the mouth of a tidal inlet, caused by tidal currents.
- Mathematics A finite increment in a variable.
- Being in the fourth position relative to a designated carbon atom in an organic molecule at which an atom or a group may be substituted.
- Referring to the fourth of a group of isomers, or molecules of similar origin or properties, determined arbitrarily by those who discover or classify them. Used in combination.
Origin of deltaMiddle English, from Latin, from Greek, of Phoenician origin; see dl in Semitic roots.
- del·ta′ic , del′tic
satellite image of the
Nile River delta, Egypt
- The fourth letter of the modern Greek alphabet Δ, δ.
- A landform at the mouth of a river where it empties into a body of water.
- The letter D in the ICAO spelling alphabet, which assigns words to letters of the alphabet.
- (mathematics) The symbol Δ.
- (computing, informal) A small but noticeable effect, compare with epsilon.
- This will slow the main code path down, but only by delta.
- (computing) The set of differences between two versions of a file.
- When you update the file, the system will only save the deltas.
- (surveying) The angle subtended at the center of a circular arc.
From Ancient Greek δέλτα (delta).
delta - Computer Definition
) A change (increase or decrease) in the value of a variable.
An incremental value between one number and another.
delta - Investment & Finance Definition
The measurement of how much an option’s premium changes when there is a unit change in the underlying price of the financial instrument, which may be a futures contract, a stock, or some other financial instrument. Another way to interpret delta is as an indication of whether an option will still be in the money, or have value, at its expiration.