10.1- Verbocentrism (No definition!?!?)

Vocab Word-  Verbocentrism

Where I found it- From the article of endless vocabulary words-

Siegel, M. (2012). New times for multimodality? confronting the accountability culture. journal of adolescent & adult literacy, 55(8), 671-680.
Definition- Merriam Webster online dictionary does not have a definition for verbocentrism and neither does Dictionary.com.

Familiarity- Clearly, this word is very unfamiliar. I don't think I have ever come across a word that an online dictionary couldn't help me with. I am baffled by this word.

Reflective Commentary-  Due to the unsuccessful journey of finding the meaning of this word has brought me to a complete stop. I even Googled verbocentrism and found nothing, even in the "images" section. I really hope that someone can help me with finding or at least partially understanding what verbocentrism means.