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单词 quantum
释义

quantum

noun
/ˈkwɒntəm/
/ˈkwɑːntəm/
(plural quanta
/ˈkwɒntə/
/ˈkwɑːntə/
)
(physics)
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  1. a very small quantity of electromagnetic energy
    Oxford Collocations DictionaryQuantum is used before these nouns:
    • jump
    • leap
    • mechanics
    See full entry
    Word Originmid 16th cent. (in the general sense ‘quantity’): from Latin, neuter of quantus ‘how great, how much’. The current sense dates from the early 20th cent.
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更新时间:2025/6/23 5:47:28