or·​tho·​stat·​ic ˌȯr-thə-ˈsta-tik How to pronounce orthostatic (audio)
: of, relating to, or caused by an upright posture
orthostatic hypotension

Examples of orthostatic in a Sentence

Recent Examples on the Web The study didn’t monitor for postural orthostatic tachycardia syndrome, or POTS, that some research has linked with Covid vaccines. Jason Gale, Fortune Well, 19 Feb. 2024 For example, some evidence suggests that some people with COVID have developed postural orthostatic tachycardia syndrome (POTS) after infection. Maressa Brown, Health, 31 Oct. 2023 Also called orthostatic hypotension, that type of dizziness results from gravity quickly moving blood from the upper body to the lower body. Isadora Baum, Health, 11 Sep. 2023 In this unifying framework, fibromyalgia and postural orthostatic tachycardia syndrome (POTS) — other debilitating symptom clusters — are included as subsets of CFS. Steven Phillips, STAT, 14 Sep. 2023 But orthostatic tremor is in a class by itself: a high-frequency tremor that primarily affects the legs and trunk, triggered by standing and relieved with movement. Lisa Sanders, M.d., New York Times, 18 Aug. 2022 In addition to complex pediatric long Covid, Ayden had been diagnosed with orthostatic intolerance, an inability to remain upright without symptoms like lightheadedness, and dysautonomia, a dysfunction of the nerves that regulate involuntary body functions like heart rate and blood pressure. Jen Christensen, CNN, 14 Jan. 2023 In addition to severe fatigue and PEM, core symptoms of ME/CFS include sleep dysfunction, pain, problems with thinking and memory, and difficulty maintaining blood pressure and other systems while standing, a condition known as orthostatic intolerance. Alexander Zaitchik, The New Republic, 2 Feb. 2021 Prior to the pandemic, his older brother, Patrick, 14, had previously experienced frequent migraine and nausea, and had been diagnosed with autism and postural orthostatic tachycardia syndrome (POTS)—an autonomic dysfunction that can cause lightheadedness, fainting, and rapid heartbeat. Popular Science, 16 Sep. 2020

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'orthostatic.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1902, in the meaning defined above

Time Traveler
The first known use of orthostatic was in 1902

Dictionary Entries Near orthostatic

Cite this Entry

“Orthostatic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/orthostatic. Accessed 21 May. 2024.

Medical Definition


or·​tho·​stat·​ic ˌȯr-thə-ˈstat-ik How to pronounce orthostatic (audio)
: of, relating to, or caused by erect posture
orthostatic hypotension
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