(physics) A vector change in velocity, especially a small change as a result of a corresponding change in some other parameter

plural of delta iron

(music) A form of blues originating in the Mississippi Delta region of the United States, generally featuring minimal instrumentation and song structure.

A particular allotrope of iron.

(aeronautics) An aircraft wing having a swept-back shape in the form of an isosceles triangle; used mostly on supersonic aircraft

(electricity) A type of three-phase connection.

A brass alloy consisting of copper (55%), zinc (41-43%) and iron (1-3%), with the balance consisting of various other metals. The proportions used make the material harder and suitable for valves and bearings.

A hyperon of short life.

plural of delta cell

(mathematics) A binary function, written as δ with two subscripts, which evaluates to 1 when its arguments are equal, and 0 otherwise.