No big deal if there does not exist such a word, but I was wondering.
closed as not a real question by RegDwighт♦ Dec 8 '12 at 16:12
It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, see the FAQ.
In mathematics, the circumlocution not well defined is the most common appellation for something that is incompletely defined (1, 2). Occasionally ambiguous (“Open to multiple interpretations” or “Vague and unclear”) and ill-defined are used as synonyms of not well defined. Of ill-defined, mathworld says: “The term "ill-defined" is also used informally to mean ambiguous.”