8. (Mathematics) maths. a. an expression that can be assigned any of a set of values. b. a symbol, esp x, y, or z, representing an unspecified member of a class of objects, numbers, etc. See also dependent variable, independent variable.
James Cameron was born on August 16, 1954, in Kapuskasing, Ontario, Canada. A science-fiction fan as a child, he grew up to become one of the most visionary filmmakers in Hollywood.
Steven Spielberg. The most commercially successful filmmaker in Hollywood history, Steven Spielberg was born December 18, 1946, in Cincinnati, OH. A lifelong cinema buff, he began directing his first short movies while still a child, later studying film at California State University and winning notice for his 1969 short feature Amblin'.