blennostatic

blen·no·stat·ic

(blen'ō-stat'ik),
Rarely used term for diminishing mucous secretion.

blennostatic

An older term for either:
adjective Referring to blennostasis—stopping the flow of mucus; or

noun An agent that stops the flow of mucus.

The term mucostatic fills the lexical is more readily understood and used in the working medical parlance.