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Exam: Cambridge English: C1 Advanced (CAE)

oppressiveness

IPA: /əˈprɛsɪvnəs/

KK: /əˈprɛsɪvnəs/

noun

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.

opprobrious

IPA: /əˈproʊbriəs/

KK: /əˈproʊbriəs/

adjective

Definition: Causing shame or disgrace; expressing scorn or abuse.

Example: The critic's opprobrious remarks about the film upset the director.

opsimath

IPA: /ˈɒpsɪmæθ/

KK: /ˈɑːpsɪmæθ/

noun

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.

opsonin

IPA: /ˈɒp.sə.nɪn/

KK: /ˈɑp.sə.nɪn/

noun

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.

opsonize

IPA: /ˈɒp.sə.naɪz/

KK: /ˈɑp.səˌnaɪz/

transitive verb

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.

optative

IPA: /ˈɒptətɪv/

KK: /ˈɑːptətɪv/

adjective

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.

noun

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.

optatively

IPA: /ˈɒptətɪvli/

KK: /ˈɑːptətɪvli/

adverb

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

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

optic

IPA: /ˈɒptɪk/

KK: /ˈɑptɪk/

adjective

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.

noun

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.

opticist

IPA: /ˈɒptɪsɪst/

KK: /ˈɑptɪsɪst/

noun

Definition: A person who studies or works with light and vision, especially in relation to lenses and optical instruments.

Example: The opticist explained how different lenses can affect our vision.

optics

IPA: /ˈɒptɪks/

KK: /ˈɑptɪks/

noun

Definition: The area of science that studies light, how it behaves, and how we see things.

Example: The study of optics is essential for understanding how lenses work in glasses and cameras.

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