Deltic may refer to: *

Napier Deltic The Napier Deltic engine is a British opposed-piston engine, opposed-piston valveless, supercharged Uniflow scavenging, uniflow scavenged, two-stroke diesel engine used in marine diesel engine, marine and locomotive applications, designed and ...

, a diesel engine **

British Rail DP1 English Electric DP1, commonly known as ''Deltic'', is a prototype demonstrator locomotive employing two Napier Deltic engines, built by English Electric in 1955. The high power of the locomotive at an acceptably low axleload resulted in 22 s ...

("Deltic") a prototype locomotive built by English Electric fitted with the Deltic Engine **

British Rail Class 55 The British Rail Class 55, also known as a Deltic, or English Electric type 5, is a class of diesel locomotive built in 1961 and 1962 by English Electric for British Railways. They were designed for the high-speed express passenger services on ...

, production locomotives powered by Deltic engines **

British Rail Class 23 The British Rail Class 23 were a class of ten Bo-Bo diesel-electric locomotives built by the English Electric Company (EE) in 1959. The power unit used was a Napier Deltic T9-29 9-cylinder engine of driving an EE generator, which powered the ...

, "Baby Deltic" production locomotives powered by Deltic engines **

Deltic Preservation Society The Deltic Preservation Society is a railway preservation group based in England. The society is dedicated to the preservation and restoration of the remaining Class 55 "Deltic" diesel locomotives operated by British Rail from the 1960s to the ...

Deltic acid Deltic acid or dihydroxycyclopropenone is a chemical substance with the chemical formula C3O(OH)2. It can be viewed as a ketone and double alcohol of cyclopropene. At room temperature, it is a stable white solid, soluble in diethyl ether, that ...

, a chemical whose molecular backbone resembles the Greek letter delta (Δ)

See also