2. Anyone empowered to act for or to represent another person; such as, an author's agent; or an insurance agent.
3. A means by which something is done or that is caused to be done; an instrument.
4. A force or substance that causes a change; such as, a chemical agent; an infectious agent.
5. A representative or official of a government or administrative department of a government: an FBI agent.
6. A spy.
7. In linguistics, the noun or noun phrase that specifies the person through whom or the means by which an action is effected.
2. A secret agent implanted in an organization; such as, a trade union or political party, to incite its members to actions or declarations that will result in penalties or punishment for them: In the story that Jim was reading, the secret service decided to ask a young woman to be an agent provocateur in order to provoke a suspected person to perform an illegal deed which would then result in his conviction.
These agents are used in treating hypertension, angina, certain cardiac arrhythmias, and postmyocardial infarction.
They may also be helpful in preventing migraine and in treating stage fright and benign essential tremor.
This type of agent acts by interfering with the action of histamine rather than by preventing its secretion.
Such drugs may stimulate the synthesis of insulin by the pancreatic beta cells, inhibit glucose production, facilitate the transportation of glucose to muscle cells, and sometimes increase the number of receptor sites where insulin can be bound and can imitate the process of breaking down glucose.
A person who seeks to recover the amount of bail from a fugitive fleeing from justice.