Meanings
noun
- A sign in chest radiography that represents a focus of oligemia seen distal to a pulmonary embolism.
Origin
Named after Nils Westermark, a Swedish radiologist.
Full word history & related roots →Cite this entry
APA
Westermark sign. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Westermark%20sign
MLA
“Westermark sign.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Westermark%20sign. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Westermark sign,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Westermark%20sign.
Source: Westermark sign on Wiktionary, CC BY-SA 4.0.