subarachnoid
adjective
sub·arach·noid ˌsəb-ə-ˈrak-ˌnȯid 
variants or less commonly subarachnoidal
ˌsəb-ə-rak-ˈnȯi-dᵊl
: of, relating to, occurring, or situated under the arachnoid membrane
subarachnoid hemorrhage
Example Sentences
Recent Examples on the Web Clarke experienced her first aneurysm, which caused a stroke and a subarachnoid hemorrhage, soon after wrapping up filming on the first season of Game of Thrones in 2011. 
Anna Lazarus Caplan, PEOPLE.com, 18 July 2022 Edwards had suffered a subarachnoid hemorrhage, which is bleeding from a vein, unlike a stroke or aneurysm, which involves a torn or blocked artery. Diane Bell Columnist, San Diego Union-Tribune, 30 Oct. 2021 The official diagnosis was subarachnoid hemorrhage and subdural hematoma — bleeding and the pooling of blood on the surface of the brain. John Branch, New York Times, 7 Oct. 2021 The cause of death was subarachnoid hemorrhage of the brain. John Diedrich, Milwaukee Journal Sentinel, 15 Nov. 2014 A few days later, he was struck by a subarachnoid hemorrhage – bleeding in his brain stem that could have proved fatal. Darlene Aderoju, PEOPLE.com, 5 Dec. 2019 These aneurysms usually happen in the space between the brain and thin tissues covering the brain, which is known as a subarachnoid hemorrhage. Korin Miller, SELF, 22 Mar. 2019 At the hospital, Clarke was diagnosed with a subarachnoid hemorrhage (SAH)—a type of stroke and the neurological term for a ruptured aneurysm. Macaela Mackenzie, Glamour, 22 Mar. 2019 In 2005, Sharon suffered a subarachnoid hemorrhage which was mishandled by a major local hospital, forcing her into early retirement. courant.com, 8 July 2018 See More
Anna Lazarus Caplan, PEOPLE.com, 18 July 2022 Edwards had suffered a subarachnoid hemorrhage, which is bleeding from a vein, unlike a stroke or aneurysm, which involves a torn or blocked artery. Diane Bell Columnist, San Diego Union-Tribune, 30 Oct. 2021 The official diagnosis was subarachnoid hemorrhage and subdural hematoma — bleeding and the pooling of blood on the surface of the brain. John Branch, New York Times, 7 Oct. 2021 The cause of death was subarachnoid hemorrhage of the brain. John Diedrich, Milwaukee Journal Sentinel, 15 Nov. 2014 A few days later, he was struck by a subarachnoid hemorrhage – bleeding in his brain stem that could have proved fatal. Darlene Aderoju, PEOPLE.com, 5 Dec. 2019 These aneurysms usually happen in the space between the brain and thin tissues covering the brain, which is known as a subarachnoid hemorrhage. Korin Miller, SELF, 22 Mar. 2019 At the hospital, Clarke was diagnosed with a subarachnoid hemorrhage (SAH)—a type of stroke and the neurological term for a ruptured aneurysm. Macaela Mackenzie, Glamour, 22 Mar. 2019 In 2005, Sharon suffered a subarachnoid hemorrhage which was mishandled by a major local hospital, forcing her into early retirement. courant.com, 8 July 2018 See More Word History
First Known Use
1843, in the meaning defined above
Medical Definition
subarachnoid
adjective
sub·arach·noid ˌsəb-ə-ˈrak-ˌnȯid
variants also subarachnoidal
-rak-ˈnȯid-ᵊl
1
: situated or occurring under the arachnoid membrane
subarachnoid hemorrhage
2
: of, relating to, or involving the subarachnoid space and the fluid within it
subarachnoid meningitis