Triplane
1.
an airplane with three supporting wings, one above another: a design used mainly in the early history of the airplane.
noun
1.
an aeroplane having three wings arranged one above the other
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adjective 1. threefold; consisting of three parts: a triple knot. 2. of three kinds; threefold in character or relationship. 3. three times as great. 4. International Law. tripartite. noun 5. an amount, number, etc., three times as great as another. 6. a group, set, or series of three; something threefold; triad. 7. Also called three-base […]
- Triple a
noun 1. (military) anti-aircraft artillery AAA noun a 1.5-volt dry-cell battery; also written AAA
- Triple-alliance
noun 1. the alliance (1882–1915) of Germany, Austria-Hungary, and Italy. 2. a league (1717) of France, Great Britain, and the Netherlands against Spain. 3. a league (1668) of England, Sweden, and the Netherlands against France. Triple Alliance noun 1. the secret alliance between Germany, Austria-Hungary, and Italy formed in 1882 and lasting until 1914 2. […]
- Triple alpha process
triple alpha process (trĭp’əl) A nuclear fusion reaction in which three helium nuclei (alpha particles) fuse to form a carbon nucleus, thereby releasing energy. Two helium nuclei fuse to form an unstable isotope of beryllium, which under conditions of sufficient temperature and pressure fuses with a third helium nucleus to form carbon before it decays. […]
- Triple-bogey
noun, Golf. 1. a score of three strokes over par on a hole.