What is a "terminological inexactitude" exactly?

I'm guessing that the writers of Easy A are patting themselves on the back for their use of the term "terminological inexactitude." The 2-word, 11-syllable term most likely comes across to the audience as puffed up synonym for "lie." Most of the audience anyway. Some nitpickers will however pick apart the use of this term in the film.

The story concerns Olive (Emma Stone), a high school student who quickly gains a reputation for being a slut despite the fact that she is in fact a virgin. On her webcast, Olive talks about the "velocity" with which her "terminological inexactitude" travels through the entire school. Olive invents a college guy and lets her best friend, Rhiannon (Aly Michalka), jump to the conclusion that Olive lost her virginity to that guy during the weekend that just passed. The reality is that Olive stayed at home by herself the entire weekend.

I have no quibble with the first part of the term. My first thought would have been to use "verbal" instead, but it seems like the rumors spread as much through text messages as through phone calls and face-to-face conversations, perhaps more.

It's the second part of the term that gives me pause. The thesaurus defines "inexact" as "imprecise" or "inaccurate" or "vague," etc. I don't see anything like "totally false" in there. It seems to me that most people make a distinction between "imprecise" and "false." For example, it is imprecise to say that π is 3.1, but it is completely false to say that is negative 78 trillion.

Thus, going back to the film, it would have been inexact for Olive to say that she had sex with the guy if she had made out with him on his bed. But the guy doesn't even exist in the first place! Olive actually comes closer to sex with Brandon (Dan Byrd), artlessly described as a "homo," at Melody Bostick's house party. But it seems like she never actually says "I had sex with Brandon," because it is much easier to just let people think that after the weird performance they put in behind closed doors.

On the other hand, even nitpickers must acknowledge that the normal person cuts herself more slack for imprecisions than she does others, that is, if I say something false then it is an inexactitude, but if you say something false it is a lie.

Maybe in another installment we will take a look at what could be the most famous imprecision slash lie in the entire filmic canon: the idea that Darth Vader killed Anakin Skywalker.