5:2 Juxtaposed

Where and when did I find this word?
I found this word in a reading that was assigned in another course.  The article is entitled, Imagining the Possibilities in Multimodal Curriculum Design by Peggy Albers.  The article is about how and why educators and administrators should focus on multimodal curricular planning.  The word was found in the following sentence:

I have always loved literature for its ability to teach me about ideas, places, and people I have not experienced in my own life, but now I see how much more powerful these stories can be when juxtaposed with images, poetry, and music that take the reader to the emotional space of the piece of work.

What does this word mean?
According to http://www.wordnetweb.princeton.edu/, the word juxtaposed means to place side by side.  The example given was:  The pictures were juxtaposed so that we could compare them.

What is my familiarity with this word?
I have come across this word many times but I had always thought that it meant "add to."  When I saw it in this particular scholarly paper, I used the context clues given within the reading to try to define it, but I was unable to come up with anything more than "add to."

Do I want to know this word and why?
I do want to know this word.  First, I like the way it sounds, it sounds very "technical."  Second, as an educator, I want to know as many words correctly as possible.  Somewhat knowing or maybe knowing a word is embarrassing.  Third, I can use this word in my classroom and teach it to my students.  I create many presentations where I juxtapose clip art, movie or music clips, or pictures within the presentation.

Do I want others to know this word?
I think that many people are like me, we sort of know what a word means.  We usually don't use this word when speaking because we are unsure of its meaning but when we come across it while reading or listening we can use the context in which it is used to come up with a round-about definition so that we can sort of understand what we are reading or listening to.  It is important for others to know this word because in the technology driven society we live in, it is wise to know such words rather than just sort of know.