deltás
Delta is a term with multiple meanings depending on the context. In geography, a delta refers to a landform created by deposition of sediment that is carried by a river as the flow leaves its mouth and enters slower-moving or standing water. This typically occurs where a river enters an ocean, sea, estuary, lake, or another river. Deltas are often triangular in shape, resembling the Greek letter delta (Δ), which is where the name originates. Examples include the Nile Delta and the Mississippi River Delta.
In mathematics, particularly in calculus, delta (Δ) is commonly used to represent a change in a variable.
In physics, delta particles (Δ) are a type of baryon, which are subatomic particles composed of three
The term also appears in other fields. In statistics, delta methods are used for approximating the variance