ophicleide

a musical wind instrument, a development of the old wooden serpent, consisting of a conical metal tube bent double.

unilingual

knowing, using, concerning, or in only one language.

interferometer

any instrument which divides a beam of light or other electromagnetic radiation into a number of beams and re-unites them to produce interference; used to measure small distances, compare lengths, and measure diameters of stars.

leishmaniasis

a group of infectious diseases typically causing ulceration of skin and mucous membranes, and caused by flagellate protozoan parasites of the genus Leishmania; transmitted to humans by certain species of sandfly.

elephantiasis

a chronic form of filariasis, due to lymphatic obstruction, characterised by enormous enlargement of the parts affected.

overflight

a flight by an aircraft that passes over a specific area or territory.

psychosurgery

surgery on the brain, such as frontal lobotomy, undertaken to relieve a mental disorder.

afterpiece

a short dramatic piece performed after a play.

repercussion

an after-effect, often an indirect result, of some event or action.