Meanings
nounH5N1 (uncountable)
- uncountablemedicineA strain of avian influenza, often lethal in humans but not transmissible between humans.
Authorities said the discovery of H5N9 bird flu in poultry came alongside the detection of the more common H5N1 strain on the same farm in Merced county, California, and that almost 119,000 birds on the farm had been killed since early December.
2025 January 27, Edward Helmore, “First outbreak of rare bird flu strain reported at California poultry farm”, in The Guardian, archived from the original on 25 Mar 2025
Cite this entry
APA
H5N1. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/H5N1
MLA
“H5N1.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/H5N1. Accessed November 3, 2026.
Chicago
WatkinsX Dictionary, s.v. “H5N1,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/H5N1.
Source: H5N1 on Wiktionary, CC BY-SA 4.0.