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Characterized by movement of the lips or other speech organs without making audible sounds: subvocal speech.

sub·vo′cal·ly adv.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


1. (Linguistics) (of speech or other sound) not voiced, involving movement of the lips or other speech organs but no vocalization
2. (Linguistics) involving the formation of words solely in the mind
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
References in periodicals archive ?
Skinner (1957) introduced the term textual behavior to refer to a verbal response (vocal, subvocal, or gestural) under the control of a text (a visual stimulus) or even a tactual stimulus (e.g., for Braille reading).
Esta integrado por un almacen a corto plazo y un proceso de repaso articulatorio; el primero es de capacidad limitada y requiere del repaso vocal o subvocal para recordar la informacion.
This discrepancy is thought to be due both to elements of Deaf behavior and culture (e.g., subvocal thought and language dysfluency), as well as to ASL-interpreter variables that may lead to misinterpretation of "Deaf behavior" as psychotic [2, 5].
This phenomenon is called subvocal speech, and it happens all the time.
As mentioned, this auxiliary system is responsible for the temporary storage of speech-based information and is, in turn, divided into two subcomponents: The phonological store, where small amounts of verbal information are passively retained and the subvocal rehearsal, which is an active process that facilitates the execution of other strategies (e.g., chunking or recoding), resulting in the retention of items for longer periods of time.
It has long been suggested that the speech apparatus and auditory circuitry are active during language comprehension, including silent reading, in a process known as subvocal rehearsal (Baddeley, Eldridge, and Lewis).
The text is something to be read, either out loud in my delivering it to an audience or in an individual's silent subvocal reading.