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Exam: TOEFL

polyalcohol

IPA: /ˌpɒliˈæl.kɒl/

KK: /ˈpɑliˌɔlˌkɔl/

noun

Definition: A type of alcohol that has more than two hydroxyl groups in its structure, which makes it different from regular alcohols.

Example: Glycerol is a common example of a polyalcohol used in food and cosmetics.

polyamide

IPA: /ˈpɒliˌæɪmaɪd/

KK: /ˈpɑliˌæɪmaɪd/

noun

Definition: A type of plastic made from long chains of molecules that contain amide groups, commonly used in fabrics and materials like nylon.

Example: The jacket is made of polyamide, which makes it both durable and lightweight.

polyamine

IPA: /ˌpɒliˈeɪmiːn/

KK: /pɑːliˈeɪmiːn/

noun

Definition: A type of organic compound that has more than one amino group in its structure, consisting of carbon, nitrogen, and hydrogen.

Example: Researchers are studying the effects of polyamines on cell growth.

polyamorous

IPA: /ˌpɒliˈæmərəs/

KK: /ˌpɑliˈæmərəs/

adjective

Definition: Relating to the practice of having romantic relationships with more than one person at the same time, where all partners are aware and agree to it.

Example: She identifies as polyamorous and believes in loving multiple partners openly and honestly.

polyandrous

IPA: /ˌpɒliˈændrəs/

KK: /pɑlɪˈændrəs/

adjective

Definition: Describing a relationship where a woman has multiple husbands at the same time.

Example: In some cultures, polyandrous marriages are practiced as a way to manage land and resources.

polyandry

IPA: /ˌpɒliˈændri/

KK: /pɑˈliːˌændri/

noun

Definition: The practice or condition of a woman having more than one husband at the same time.

Example: In some cultures, polyandry is accepted as a way to manage land and resources.

polyatomic

IPA: /ˌpɒliəˈtoʊmɪk/

KK: /pɑlɪəˈtoʊmɪk/

adjective

Definition: Relating to a molecule that consists of three or more atoms.

Example: Water is a polyatomic molecule because it has three atoms: two hydrogen and one oxygen.

polycarbonate

IPA: /ˌpɒlɪˈkɑːbəneɪt/

KK: /ˌpɑliˈkɑrbəˌneɪt/

noun

Definition: A type of strong and lightweight plastic that is often used as a substitute for glass because it is shatter-resistant.

Example: The safety glasses were made from polycarbonate to prevent shattering.

polycentric

IPA: /ˌpɒlɪˈsɛntrɪk/

KK: /pɑlɪˈsɛntrɪk/

adjective

Definition: Having multiple centers of authority or control, rather than a single dominant one.

Example: In a polycentric world, power is distributed among various centers rather than being concentrated in one place.

noun

Definition: Not a valid English word.

Example: Not available

polycentrism

IPA: /ˌpɒlɪˈsɛntrɪzəm/

KK: /pɑlɪˈsɛntrɪzəm/

noun

Definition: A system or situation where there are multiple centers of authority, control, or culture, rather than a single dominant one.

Example: The country's polycentrism allows for diverse cultural expressions and governance.

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