plural of delta iron

(mathematics) A function-like symbol denoted as δ, with the property ∫f(t)𝛿(x-t)dt=f(x), informally understood as a function with an infinite value at 0 and zero elsewhere, and formally as a distribution or a measure.

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

plural of delta cell

A kind of somatostatin-producing cell found in the stomach, intestine, and islets of Langerhans in the pancreas.

(aeronautics) On rotorcraft, a hinge with its axis parallel to the rotor plane of rotation, which permits the rotor blades to flap.

plural of delta hinge

Alternative spelling of delta blues

(US, military) A US Army unit that carries out hostage rescue, counterterrorism, and actions against high-value targets.

plural of delta connection