Exam: TOEFL

Definition: A person who supports or argues for a cause, policy, or idea.

Example: As an advocator for environmental protection, she tirelessly campaigns for sustainable practices.

Definition: A type of software that shows advertisements while it is being used, often provided for free to help cover costs.

Example: Many free applications come bundled with adware that displays ads during use.

Definition: A condition where a person feels weak or lacks energy, often due to illness.

Example: The patient was diagnosed with adynamia, which explained his extreme fatigue and weakness.

Definition: Describing something that lacks energy, strength, or the ability to move or function effectively.

Example: The patient was diagnosed with an adynamic condition that left him feeling weak and fatigued.

Definition: A form of protection or support, often provided by a person or organization. It can also refer to guidance or control in a particular situation.

Example: The project was completed under the aegis of the local government.

Definition: A very long period of time, often used to describe an age or era that lasts for millions or billions of years.

Example: The aeon of the dinosaurs lasted for millions of years.

Definition: A type of protein found in some jellyfish that glows in the dark when it comes into contact with calcium ions.

Example: Researchers studied aequorin to understand its role in bioluminescence in jellyfish.

Definition: To make something have air or gas in it, often to improve its quality or help it work better. This can involve adding air to soil or mixing a liquid with gas.

Example: Farmers aerate the soil to improve its quality and promote healthy plant growth.

Definition: The process of mixing air with a substance, like soil or liquid, to improve its quality or help it function better.

Example: Aeration is essential for healthy plant growth as it allows roots to access oxygen.

Definition: Relating to the air or atmosphere; something that is above the ground or in the sky.

Example: The aerial view of the city was breathtaking.

Definition: A structure used to send or receive radio signals, often positioned high in the air. It can also refer to a type of acrobatic move done in the air, like those performed by gymnasts or skiers.

Example: The technician installed a new aerial on the roof to improve the television signal.