🇫🇷French Source WordCode: FR

demi-vie

Pronunciation / Transliteration: dɛmi vi

🇬🇧 Direct English Meaning:
Half-Life/ˈhæf.laɪf/
nounCEFR B2 (Upper)Top #1500 frequency
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🇫🇷 Example Sentence in French:

"La demi-vie du carbone-14 est d'environ 5 730 ans."

Comprehensive Definitions & Senses

2 senses
As noun
  1. 1

    The time required for the quantity of a substance to reduce to half its initial amount.

    "The half-life of carbon-14 is about 5,730 years."
  2. 2

    A period of time in which something diminishes to half its initial value, often used in contexts beyond physics, such as in pharmacology.

    "The half-life of the medication in the body is approximately four hours."

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Antonyms & Contrasting Words (1)

Linguistic Origin & Historical Etymology

The term 'half-life' originates from the field of nuclear physics, first used in the early 20th century. It combines the Old English 'half', meaning 'one of two equal parts', and 'life', derived from the Old English 'līf', referring to the duration of existence. Over time, it has evolved to describe the time required for a quantity to reduce to half its initial value in various scientific contexts.

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