Exam: TOEFL

Definition: Relating to or characteristic of an oligarchy, which is a form of government where a small group of people hold power.

Example: The country's political system is oligarchical, with a few wealthy families controlling most of the resources.

Definition: A type of government where a small group of people hold power and make decisions for everyone, often for their own benefit.

Example: In an oligarchy, a few wealthy families control the country's resources and political decisions.

Definition: A type of cell in the nervous system that helps produce a protective covering called myelin around nerve fibers.

Example: Oligodendrocytes play a crucial role in the functioning of the central nervous system by insulating nerve cells.

Definition: A type of supportive cell in the nervous system that helps form the protective covering around nerve fibers, known as myelin.

Example: Oligodendroglia play a crucial role in the health of the central nervous system by insulating nerve cells.

Definition: A short chain made up of a few nucleotides, which are the building blocks of DNA and RNA.

Example: Researchers used an oligonucleotide to help identify the genetic sequence.

Definition: Describing an organism that feeds on a limited variety of food sources, particularly a small number of plants, often used in reference to insects.

Example: Some insects are oligophagous, meaning they only eat a few types of plants.

Definition: The practice of eating only a limited variety of foods, often focusing on just a few specific types.

Example: Some animals exhibit oligophagy by feeding exclusively on certain plants.

Definition: Describing a market or industry that is controlled by a small number of companies, leading to limited competition.

Example: The telecommunications industry is often considered oligopolistic due to the few major players that dominate the market.

Definition: A situation in a market where a small number of companies control most of the supply, so that the decisions of one company can influence prices and competition.

Example: In an oligopoly, a few large firms dominate the market, making it difficult for new competitors to enter.

Definition: A type of carbohydrate made up of a few simple sugars linked together.

Example: Oligosaccharides are found in many plants and can be beneficial for digestion.