Exam: IELTS

Definition: The quality or state of being harsh, cruel, or unjust, often causing discomfort or suffering.

Example: The oppressiveness of the heat made it difficult to concentrate on work.

Definition: A person or group that treats others in a cruel or unfair way, often by using power or authority to control them.

Example: The oppressor used their power to silence the voices of the people.

Definition: A person who starts to learn or study something later in life, often after having missed the opportunity to do so when younger.

Example: My grandfather is an opsimath; he decided to learn to read and write in his seventies.

Definition: A type of protein or antibody in the blood that helps the immune system recognize and attack foreign cells, like bacteria, by making them easier for immune cells to destroy.

Example: Opsonins play a crucial role in the immune response by marking pathogens for destruction.

Definition: To make certain cells, like bacteria, easier for the immune system to recognize and destroy.

Example: The vaccine helps to opsonize the bacteria, making it easier for the body to fight off infections.

Definition: To make a choice or decision about something.

Example: She decided to opt for the vegetarian meal instead of the meat dish.

Definition: Relating to a grammatical mood that expresses a wish or desire.

Example: In some languages, the optative mood is used to convey hopes or wishes.

Definition: A form of a verb that expresses a wish or desire.

Example: In some languages, the optative mood is used to express hopes or wishes.

Definition: In a manner that expresses a wish or desire.

Example: She spoke optatively, hoping for a better future.

Definition: Related to the eye or the ability to see, often involving the science of light and vision.

Example: The optic nerve transmits visual information from the eye to the brain.

Definition: A part of an optical instrument, such as a lens or mirror, that helps to focus or direct light.

Example: The scientist adjusted the optic to improve the clarity of the image.

Definition: Related to vision or the use of light, especially in instruments that help us see or understand visual information.

Example: The optical lens helped to magnify the tiny details of the specimen.