opsonin

[ op-suh-nin ]
/ ˈɒp sə nɪn /

noun Immunology.

a constituent of normal or immune blood serum that makes invading bacteria more susceptible to the destructive action of the phagocytes.

Origin of opsonin

1900–05; < Latin opsōn(ium) victuals (< Greek opsōnía, derivative of opsōneîn to buy provisions) + -in2

OTHER WORDS FROM opsonin

op·so·noid, adjective

Words nearby opsonin

opsogen, opsomania, opsonic, opsonic index, opsonify, opsonin, opsonization, opsonize, opsonocytophagic, opsonometry, opt

Example sentences from the Web for opsonin

  • In the case of diphtheria, the antitoxin appears to be more efficacious than an opsonin.

    The Pros and Cons of Vivisection |Charles Richet

  • The "opsonin," or "relish," is something exuded into or produced in the blood fluid when the attacking microbe arrives.

    More Science From an Easy Chair |Sir E. Ray (Edwin Ray) Lankester

British Dictionary definitions for opsonin

opsonin
/ (ˈɒpsənɪn) /

noun

a constituent of blood serum that renders invading bacteria more susceptible to ingestion by phagocytes in the serum

Derived forms of opsonin

opsonic (ɒpˈsɒnɪk), adjective

Word Origin for opsonin

C20: from Greek opsōnion victuals

Medical definitions for opsonin

opsonin
[ ŏp′sə-nĭn ]

n.

An antibody in blood serum that causes bacteria or other foreign cells to become more susceptible to the action of phagocytes.