bun3 seoi1 kei4半衰期
Jyutpingbun3 seoi1 kei4
Yalebun sēui kèih
Definition
Half-life; the time required for the concentration of a substance to decrease by half.
neutralother
How it's used
Primarily used in scientific and technical contexts, this term is borrowed directly from formal terminology. While it appears in academic discussions, it is rarely used in casual daily conversation unless the topic specifically involves chemistry, physics, or pharmacology. It functions as a noun and is typically modified by adjectives describing length or duration.
Measure word
dyun6段dyunhExamples
Do you know how long the half-life of this element is?
Related words
Grammar color guide
Noun
Verb
Adjective
Adverb
Pronoun
Classifier
Particle
Connector
Grammar guides
- NegationHow to say no, not, didn't, and don't in Cantonese. The four main negation words and when to use each one.
- Numbers and moneyCounting, talking about money, and asking how much things cost. Includes the two words for two and the everyday words for dollars and cents.
- Aspect markersCantonese has no tenses, but it does have aspect markers. Learn how zo2, gwo3, gan2, and hai2 dou6 show completion, experience, and ongoing action.
