delta

1. The fourth letter of the modern Greek alphabet Δ, δ.

   Delta

   де́льтаdɛ́lʹta

   the 4th letter of the Greek alphabet

2. A landform at the mouth of a river where it empties into a body of water.

   Nile Delta

   Delta

   де́льтаdɛ́lʹta

   де́льтаdélʹta

   a low triangular area of alluvial deposits where a river divides before entering a larger body of water

3. The symbol Δ; A change in a quantity, likely from "d" for "difference".

   ΔV - "delta vee"(change in velocity, used in rocketry and orbital mechanics)

   Delta

   де́льтаdɛ́lʹta

4. The rate of change in an option value with respect to the underlying asset's price.

5. A value in delta notation indicating the relative abundances of isotopes.

6. The set of differences between two versions of a file.

   When you update the file, the system will only save the deltas.

   дельтаdelʹta, разницаraznica, различияrazličija

7. (informal)A small but noticeable effect. Compare epsilon.

   This will slow the main code path down, but only by delta.

   дельтаdelʹta

8. The angle subtended at the center of a circular arc.

9. A type of cargo bike that has one wheel in front and two in back.

10. (attributive, often)The closed figure produced by connecting three coils or circuits successively, end for end, especially in a three-phase system.

    delta winding; delta connection; delta current

11. (Space Force, US)A military unit, nominally headed by a colonel, equivalent to a USAF operations wing, or an army regiment.

12. A star that is usually the fourth brightest of a constellation.

1. The delta variant of the coronavirus poses a threat to the economy.

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2. Everybody wants to be a sigma, but nobody wants to be a delta.

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3. The river delta has flooded many times. I don't know why anyone continues to build there.

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4. The experts say swelling cities are adding to the pressure by weighing down the deltas and sucking up groundwater.

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5. These giraffes live in the Okavango Delta.

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