mouththat

Mouththat is a term that has no single, widely recognized definition in mainstream science or lexicography. It functions as a coined label used in various niche contexts, and its meaning varies with the source. The word appears to combine “mouth” with a demonstrative element, used to name a feature or concept that is singled out or described in a particular work.

In speculative fiction and design discussions, mouththat commonly refers to a mouth-like structure or module that extends or operates alongside a primary mouth. In some creature- or robot-design narratives, a mouththat may be an additional oral aperture or a secondary vocal mechanism, capable of feeding, shaping sound, or interacting with the environment. In technical contexts, the term may describe a soft-robotics actuator, prosthetic component, or sensor array designed to emulate mouth functions.

Because the term is uncommon and nonstandard, there is no agreed set of characteristics. Its precise definition depends on the source, making it a flexible label rather than a fixed concept. Readers should consult the original context to understand what mouththat denotes in that particular usage.

See also: mouthpart, oral cavity, biomimicry, vent, articulatory phonetics.