opsonin

O1P3S1O1N1I1N1
/ˈɒpsənɪn/

noun

Any chemical produced by the body, including antibodies and complement proteins, that causes a pathogen to be more susceptible to phagocytosis.

OriginAncient Greek ὀψωνέω →
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Meanings

nounopsonin (plural opsonins)

plural opsonins

  1. Any chemical produced by the body, including antibodies and complement proteins, that causes a pathogen to be more susceptible to phagocytosis.

Origin

  1. Ancient Greekὀψωνέω“to purchase provisions, to buy victuals, to cater”
  2. Englishopsonin

From Ancient Greek ὀψωνέω (opsōnéō, “to purchase provisions, to buy victuals, to cater”) + -in.

More words from Ancient Greek

Full word history & related roots →

Translations

Italian opsonina
  • opsoninaan antibody
Spanish opsonina
  • opsoninaan antibody
Swedish opsonin
  • opsoninan antibody
Cite this entry
APA

opsonin. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/opsonin

MLA

“opsonin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/opsonin. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “opsonin,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/opsonin.

Source: opsonin on Wiktionary, CC BY-SA 4.0.