Exam: Cambridge English: C1 Advanced (CAE)

Definition: A formal promise or guarantee made to protect against loss or failure, often involving a person who takes responsibility for another's obligations.

Example: The bank required a surety before approving the loan to ensure repayment.

Definition: A substance that helps reduce the surface tension of liquids, making it easier for them to spread or mix. It is often used in cleaning products and in the lungs to help keep air sacs open.

Example: Surfactants are commonly found in soaps and detergents to help them clean better.

Definition: To indulge excessively or to have too much of something, especially food or drink.

Example: After the holiday feast, I felt I had surfeited on desserts.

Definition: A large amount of something, especially more than what is needed or wanted, often leading to discomfort or excess.

Example: After the holiday feast, I felt a surfeit of food and couldn't eat another bite.

Definition: To provide or give too much of something, leading to an excessive amount or feeling of fullness.

Example: The feast was so lavish that it surfeited the guests, leaving them unable to eat another bite.

Definition: Relating to or occurring on the surface of the earth.

Example: The surficial layers of soil are important for agriculture.

Definition: A medical doctor who performs operations to treat injuries, diseases, or deformities.

Example: The surgeon carefully explained the procedure to the patient before the operation.

Definition: Relating to medical operations performed by doctors to treat injuries or diseases.

Example: The doctor used surgical techniques to remove the tumor safely.

Definition: In mathematics, a type of function where every element in the target set is mapped to by at least one element from the domain.

Example: The function f(x) = x^2 is not a surjection when the target set is all real numbers.

Definition: Relating to a type of function in mathematics where every element in the target set is mapped to by at least one element from the domain.

Example: In mathematics, a function is called surjective if it covers every element in the target set.

Definition: More unfriendly or rude than someone or something else.

Example: His surlier attitude made it difficult for others to approach him.

Definition: The quality of being unfriendly or rude in behavior or attitude.

Example: His surliness made it difficult for others to approach him.