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

(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.

(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

plural of Kronecker delta

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

plural of delta glider

a gliding aircraft with a delta wing

(finance) A second-order measure of derivative price sensitivity, expressed as the instantaneous rate of change of delta with respect to time.