incomplete

adjective

1. not complete; lacking some part.
2. Football. (of a forward pass) not completed; not caught by a receiver.
3. Engineering. noting a truss the panel points of which are not entirely connected so as to form a system of triangles.Compare complete(def 8), redundant(def 5c).
4. Logic, Philosophy.
   1. (of an expression or symbol) meaningful only in a specific context.
   2. (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.Compare complete(def 7).

noun

5. Education. 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.

adjective

1. not complete or finished
2. not completely developed; imperfect
3. logic
   1. (of a formal theory) not so constructed that the addition of a non-theorem to the axioms renders it inconsistent
   2. (of an expression) not having a reference of its own but requiring completion by another expression