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Exam: TOEFL

zenith

IPA: /ˈzɛnɪθ/

KK: /ˈzinəth/

noun

Definition: The highest point or peak of something, often used to describe a person's career or a celestial body in the sky.

Example: After years of hard work, she finally reached the zenith of her career as a director.

zeolite

IPA: /ˈziːəlaɪt/

KK: /ˈziːəlaɪt/

noun

Definition: A type of mineral that contains water and is made of aluminum and silicon, often used for filtering and exchanging ions in various processes.

Example: Zeolites are commonly used in water treatment to remove impurities.

zeptosecond

IPA: /ˈzɛp.təˌsɛk.ənd/

KK: /ˈzɛp.təˌsɛk.ənd/

noun

Definition: A very small unit of time equal to one sextillionth of a second.

Example: Scientists measured the reaction time in zeptoseconds to understand particle interactions better.

zero

IPA: /ˈzɪəroʊ/

KK: /ˈziəroʊ/

adjective

Definition: Not having any value or amount; nothing at all.

Example: The temperature dropped to zero degrees last night.

noun

Definition: A number that represents nothing or the absence of any quantity; it is also used informally to describe someone or something that has no importance or influence.

Example: In mathematics, zero is used to indicate that there is no value or quantity.

transitive verb

Definition: To set a device or instrument to a value of zero, often for calibration or measurement purposes.

Example: The technician had to zero the scale before weighing the samples.

zestful

IPA: /ˈzɛstfəl/

KK: /zɛstfəl/

adjective

Definition: Full of energy and enthusiasm; lively and cheerful.

Example: Her zestful personality made every gathering more enjoyable.

zestfully

IPA: /ˈzɛstfəli/

KK: /zɛstfəli/

adverb

Definition: In a way that shows great enthusiasm and energy.

Example: She approached her new project zestfully, eager to make it a success.

zestfulness

IPA: /ˈzɛstfəl/

KK: /zɛstfəl/

noun

Definition: The state of being full of energy and enthusiasm.

Example: Her zestfulness for life inspired everyone around her.

zestier

IPA: /ˈzɛstɪər/

KK: /ˈzɛstɪər/

adjective

Definition: More lively, exciting, or full of flavor than something else.

Example: The new dish is zestier than the previous one, making it a favorite among customers.

zestily

IPA: /ˈzɛstɪli/

KK: /zɛstɪli/

adverb

Definition: In a lively and enthusiastic way; with great energy and enjoyment.

Example: She danced zestily at the party, bringing joy to everyone around her.

zettabyte

IPA: /ˈzɛtəˌbaɪt/

KK: /zɛtəˌbaɪt/

noun

Definition: A unit of digital information storage equal to one sextillion bytes, or 1,000,000,000,000,000,000,000 bytes.

Example: The new data center can store up to five zettabytes of information.

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