| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024pre•cur•sor /prɪˈkɜrsɚ, ˈprikɜr-/USA pronunciation n. [countable]- a person or thing that comes before another, as in a method; predecessor:my precursor in that job.
- a person, animal, or thing regarded as a sign or signal of something to come:The first robin is a precursor of spring.
- a substance that is transformed into another.
pre•cur•so•ry /prɪˈkɜrsəri/USA pronunciation adj. See -cur-. WordReference Random House Unabridged Dictionary of American English © 2024pre•cur•sor (pri kûr′sər, prē′kûr-),USA pronunciation n. - a person or thing that precedes, as in a job, a method, etc.;
predecessor. - a person, animal, or thing that goes before and indicates the approach of someone or something else;
harbinger:The first robin is a precursor of spring. - Biochemistry, Chemistry[Chem., Biochem.]a chemical that is transformed into another compound, as in the course of a chemical reaction, and therefore precedes that compound in the synthetic pathway:Cholesterol is a precursor of testosterone.
- Developmental Biology[Biol.]a cell or tissue that gives rise to a variant, specialized, or more mature form.
- Latin praecursor forerunner. See pre-, cursor
- late Middle English 1375–1425
- 1.See corresponding entry in Unabridged forerunner.
- 2.See corresponding entry in Unabridged herald.
Collins Concise English Dictionary © HarperCollins Publishers:: precursor /prɪˈkɜːsə/ n - a person or thing that precedes and shows or announces someone or something to come; harbinger
- a predecessor or forerunner
- a chemical substance that gives rise to another more important substance
Etymology: 16th Century: from Latin praecursor one who runs in front, from praecurrere, from prae in front + currere to run |