(music) Having the correct musical pitch. / (figuratively, usually with "with") In an understanding relationship (with something or someone).

plural of tuna

plural of tunnel rat

(inorganic chemistry) a very hard, grey compound, chemical formula WC, used as an abrasive.

(idiomatic) To produce music, especially to sing, with accurate relative pitch.

(physics) A semiconductor diode that has negative resistance in the forward direction of its operating range due to quantum effects.

An oil extracted from the seeds of the tung tree and used in paints and varnishes.

Any of the genus Vernicia, especially Vernicia fordii (syn. Aleurites fordii), of east Asian trees or shrubs cultivated for their seeds which are a source of tung oil.

A facility, comparable to a wind tunnel, in which an underwater component may be tested in a controlled flow of water. / A tunnel used to transport water.

A test facility through which air is forced in a controlled manner so as to study the effects of flow around airfoils, aircraft, motor cars etc.