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Exam: GRE (Verbal)

ionium

IPA: /ˈaɪə.ni.əm/

KK: /ˈaɪəniəm/

noun

Definition: A natural radioactive form of thorium with a mass number of 230, believed to be produced from the decay of actinium.

Example: Ionium is used in some scientific research related to radioactive isotopes.

ionizable

IPA: /aɪˈoʊnɪzəbl/

KK: /aɪˈɒnəˌzaɪbəl/

adjective

Definition: Able to be changed into ions, which are charged particles.

Example: Salt is an ionizable substance that can break down into ions in water.

ionization

IPA: /aɪəˈnaɪzeɪʃən/

KK: /aɪəˈnaɪzeɪʃən/

noun

Definition: The process of creating ions from atoms or molecules, often through heat, electricity, or chemical reactions.

Example: Ionization occurs when an atom gains or loses electrons, resulting in a charged particle.

ionize

IPA: /ˈaɪənaɪz/

KK: /ˈaɪənaɪz/

transitive verb

Definition: To change a substance into ions, either completely or partially.

Example: The process of ionizing the gas allowed it to conduct electricity.

ionizing

IPA: /aɪˈoʊnaɪzɪŋ/

KK: /aɪˈoʊnaɪzɪŋ/

adjective

Definition: Able to create charged particles called ions.

Example: The ionizing radiation from the sun can affect our atmosphere.

verb

Definition: To convert an atom or molecule into an ion by adding or removing charged particles, usually electrons.

Example: The process of ionizing the gas allows it to conduct electricity more easily.

ionomer

IPA: /aɪˈɒnəmər/

KK: /aɪˈɒnəmər/

noun

Definition: A type of polymer that contains ionic groups in some of its building blocks, which can affect its properties and behavior.

Example: The ionomer was used in the production of a new type of flexible packaging material.

ionophore

IPA: /aɪˈɒnəfɔːr/

KK: /aɪˈɒnəfɔr/

noun

Definition: A type of organic compound that helps move ions through cell membranes.

Example: Ionophores are used in research to study how ions pass through cell membranes.

ionosphere

IPA: /aɪˈɒnəˌsfɪə/

KK: /aɪˈɒnəˌsfɪr/

noun

Definition: The region of the Earth's atmosphere where gases are ionized, affecting radio wave transmission, located between about 30 miles and the exosphere.

Example: The ionosphere plays a crucial role in radio communication by reflecting signals back to Earth.

ionospheric

IPA: /aɪˈɒnəʊsfɪrɪk/

KK: /aɪˈɒnəˌsfɪrɪk/

adjective

Definition: Relating to the ionosphere, which is a part of the Earth's atmosphere that contains a high concentration of ions and free electrons and is important for radio communication.

Example: The ionospheric conditions can affect satellite communications and GPS signals.

iontophoresis

IPA: /aɪˌɒntəˈfɔːrɪsɪs/

KK: /aɪˌɒntəˈfɔːrɪsɪs/

noun

Definition: A medical treatment that uses electric current to deliver medication through the skin.

Example: The doctor recommended iontophoresis to help reduce the patient's pain.

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