a person who buys goods from the producer and resells them to the retailer or consumer. 2. a person who acts as an intermediary. [1785â95] Thesaurus Antonyms Related Words Synonyms Legend: Switch to new thesaurus . Noun: 1. middleman - someone who buys large quantities of goods and resells to merchants rather than to the ultimate customers. jobber, wholesaler
Mechanism (biology) In the science of biology, a mechanism is a system of casually interacting parts and processes that produce one or more effects. Scientists explain phenomena by describing mechanisms that could produce the phenomena. For example, natural selection is a mechanism of biological evolution; other mechanisms of evolution include genetic drift, mutation, and gene flow. In ecology, mechanisms such as predation and host-parasite interactions produce change in ecological systems. In practice, no descript
Trigger Mechanism. in physiology and biology, an act or stimulus that causes the abrupt shifting of a cell, organ, or entire organism from one functional state to another. For example, the trigger action of a peripheral nerve causes a muscle to contract. In this case, the synaptic potential, that is, the minute electromotive force that arises at the site of contact between a nerve and muscle fiber, functions as a spontaneous trigger mechanism.