PROB'LEM, n. [L. problema; Gr. to throw forward, and to throw; L. pello.] A question proposed.
1. In logic, a preposition that appears neither absolutely true nor false, and consequently may be asserted either in the affirmative or negative.
2. In geometry, a proposition in which some operation or construction is required, as to divide a line or an angle, to let fall a perpendicular, &c.
3. In general, any question involving doubt or uncertainty, and requiring some operation, experiment or further evidence for its solution.