Exam: Cambridge English: C2 Proficiency (CPE)

Definition: Having an excessively optimistic or confident attitude, often to the point of being unrealistic.

Example: His oversanguine outlook on the project led to disappointment when things didn't go as planned.

Definition: Relating to an ovule, which is a structure in plants that develops into a seed after fertilization.

Example: The scientist studied the ovular structure of the plant to understand its reproductive process.

Definition: A small structure in seed plants that contains the embryo sac and can develop into a seed after fertilization.

Example: The ovule is an essential part of the plant's reproductive system, as it eventually becomes the seed.

Definition: The female reproductive cell in animals, which can develop into a new organism after fertilization.

Example: The ovum is essential for reproduction in many species.

Definition: Having features or qualities that are similar to an owl, often implying wisdom or a watchful demeanor.

Example: The professor had an owlish expression as he listened to the students' questions.

Definition: A term that refers to a chemical compound formed by the reaction of oxygen with another element, typically resulting in a substance that contains oxygen and that element.

Example: Iron oxid forms when iron reacts with oxygen in the air.

Definition: Able to undergo a chemical reaction with oxygen, resulting in the formation of an oxide.

Example: Iron is oxidable, which is why it rusts when exposed to moisture and air.

Definition: A substance that provides nourishment or food, often used to describe something that is bland or lacking in substance.

Example: The lecture was criticized for being mere pabulum, offering no real insights into the topic.

Definition: Relating to animals with thick skin, like elephants and rhinoceroses, or describing someone who is insensitive or emotionally unresponsive.

Example: His pachydermatous attitude made it difficult for him to empathize with others' feelings.

Definition: A specific stage in the first division of meiosis where chromosomes become thicker and shorter, and crossing-over occurs between paired chromosomes.

Example: During the pachytene stage, genetic material is exchanged between homologous chromosomes, increasing genetic diversity.