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opsono-, opson-, -opsony (Greek: to buy food; to purchase provisions, such as food).

1. A situation in which two competing buyers exert controlling influence over many sellers.
2. A stock-market condition wherein two rival buyers exert a controlling influence on numerous sellers.
monopsony, monopsonies, monopsonist, monopsonistic:
1. A situation in which a particular type of product or service is only being bought or used by one customer.
2. A market situation in which the products or services of several sellers is sought by just one buyer.
3. A market in which goods or services are offered by several sellers but there is only one buyer.
4. A condition in which there is only one buyer for the product of a large number of sellers.
oligopsony, oligopsonies, oligopsonistic:1. A market condition in which purchases are so few that the actions of any one of them can materially affect prices and the costs that competitors must pay.
2. Markets with a very limited number of buyers.
3. An economic condition in which there are so few suppliers of a particular product that one supplier's actions can have a significant impact on prices and on its competitors.

Bearing or producing opsonin.
1. A protein fragment in blood that binds to the surface of an invading antibody and promotes its destruction by white blood cells.
2. In medicine, any substance that binds to particulate antigens and induces their phagocytosis by macrophages and neutrophils.
Food used as a relish.
opsonize, opsonized, opsonizing, opsonizes, opsonify, opsonified, opsonifying, opsonifies:
To make foreign bodies, such as bacteria, susceptible to destruction by certain blood cells by coating them with opsonin.
The rendering of bacteria and other cells subject to phagocytosis by the action of an opsonin.
Resembling an opsonin.
The science of opsonins.
opsonophilia, opsonophilic:
An affinity for opsonins.
opsony, opsonies, opsonistic, opsonia:
Anything eaten along with bread to give it relish; in ancient Greece and Rome, chiefly applied to fish.
polyopsony, polyopsonies, polyopsonistic:
The condition of a market characterized by many buyers. The multiple numbers have an effect on the price of the materials or products.