parasympathetic

1 of 2

adjective

para·​sym·​pa·​thet·​ic ˌper-ə-ˌsim-pə-ˈthe-tik How to pronounce parasympathetic (audio)
ˌpa-rə-
: of, relating to, being, or acting on the parasympathetic nervous system

parasympathetic

2 of 2

noun

1
: a parasympathetic nerve
2

Examples of parasympathetic in a Sentence

Recent Examples on the Web
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Adjective
Orgasms also activate parasympathetic pathways that promote deeper and longer sleep. Melanie Thernstrom, New Yorker, 29 June 2026 The goal is to activate parasympathetic pathways tied to calming the stress response, improving heart rate variability and supporting relaxation. Samantha Agate, Kansas City Star, 4 June 2026
Noun
Parasympathetic has two other states though- the rest and digest and according to the Polyvagal Theory, the ventral vagal branch of the parasympathetic which is social engagement. Womensmedia, Forbes, 15 Apr. 2021 But purposeful breathing can trigger your parasympathetic system, or the part of your autonomic nervous system that opposes the fight-flight-freeze response. Emily Shiffer, SELF, 3 Nov. 2020 See All Example Sentences for parasympathetic

Word History

Etymology

Adjective

International Scientific Vocabulary

First Known Use

Adjective

1905, in the meaning defined above

Noun

1916, in the meaning defined at sense 1

Time Traveler
The first known use of parasympathetic was in 1905

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Cite this Entry

“Parasympathetic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/parasympathetic. Accessed 7 Jul. 2026.

Kids Definition

parasympathetic

adjective
para·​sym·​pa·​thet·​ic
ˌpar-ə-ˌsim-pə-ˈthet-ik
: of, relating to, being, or acting on the parasympathetic nervous system

Medical Definition

parasympathetic

1 of 2 adjective
para·​sym·​pa·​thet·​ic ˌpar-ə-ˌsim-pə-ˈthet-ik How to pronounce parasympathetic (audio)
: of, relating to, being, or acting on the parasympathetic nervous system
parasympathetic fibers of the vascular wall
parasympathetic drugs

parasympathetic

2 of 2 noun
1
: a parasympathetic nerve
this sacral group of parasympathetics supplies fibers to the external genitaliaA. C. Guyton
2
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