: a streamlined enclosure (as for an engine) on an aircraft
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To support this new system, engineers mounted a cylindrical hydrogen tank beneath the tail boom and installed specialized cooling nacelles on both sides of the helicopter’s exterior.—Mrigakshi Dixit, Interesting Engineering, 12 May 2026 As this happens, the engine's power is redirected through a conventional jet nozzle at the rear of the nacelle.—David Szondy
march 09, New Atlas, 9 Mar. 2026 Safran Nacelles manufactures nacelles for short, medium and long-range commercial aircraft.—Ian King, CNBC, 25 Feb. 2026 Companies such as Siemens Gamesa and GE manufacture blades, towers and nacelles in U.S. facilities.—Monica Sanders, Forbes.com, 31 July 2025 See All Example Sentences for nacelle
Word History
Etymology
French, literally, small boat, from Late Latin navicella, diminutive of Latin navis ship — more at nave