- not complete; lacking some part.
- (of a forward pass) not completed; not caught by a receiver.
- noting a truss the panel points of which are not entirely connected so as to form a system of triangles.
- Logic, Philosophy.
- (of an expression or symbol) meaningful only in a specific context.
- (of a set of axioms) such that there is at least one true proposition (able to be formulated in terms of the basic ideas of a given system) that is not deducible from the set.
- a temporary grade indicating that a student has not fulfilled one or more of the essential requirements for a course: If I don't hand in my term paper for last semester's English course, the professor is going to change my incomplete to an F.
- not complete or finished
- not completely developed; imperfect
- logic
- (of a formal theory) not so constructed that the addition of a non-theorem to the axioms renders it inconsistent
- (of an expression) not having a reference of its own but requiring completion by another expression
