Meanings
nounCD8 (countable and uncountable, plural CD8s)
plural CD8s
- countableuncountableimmunologyA glycoprotein found on the surface of cytotoxic T cells and several other types of immune cells.
- countableimmunologyA CD8+ cytotoxic T cell.
Synonyms & antonyms
nouna membrane glycoprotein that is found primarily on the surface of cytotoxic T cells
Similar
cluster of differentiation 8
Broader
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
Initialism of cluster of differentiation type 8.
Full word history & related roots →Cite this entry
APA
CD8. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/CD8
MLA
“CD8.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/CD8. Accessed November 2, 2026.
Chicago
WatkinsX Dictionary, s.v. “CD8,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/CD8.
Source: CD8 on Wiktionary, CC BY-SA 4.0.