| 释义 |
Definition of molecule in English: moleculenoun ˈmɒlɪkjuːlˈmɑləˌkjul Chemistry A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. 〔化〕分子，摩尔 Example sentencesExamples - The reactant ions have enough energy to ionise the molecules of interest but not enough to break them up.
- This electricity splits the water molecules in an electrolyte, producing hydrogen.
- In the water molecule there are three atoms: two of hydrogen and one of oxygen.
- It works by affecting a molecule called nitric oxide, which expands blood vessels.
- At the root of sunburn are damaging molecules, free radicals that increase when the skin gets too much sun.
Synonyms particle, bit, little bit, tiny bit, tiny piece, fragment, fraction, grain, granule, crumb, morsel, mite, mote, speck, spot, dot
OriginLate 18th century: from French molécule, from modern Latin molecula, diminutive of Latin moles 'mass'. Definition of molecule in US English: moleculenounˈmɑləˌkjulˈmäləˌkyo͞ol Chemistry A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction. 〔化〕分子，摩尔 Example sentencesExamples - The reactant ions have enough energy to ionise the molecules of interest but not enough to break them up.
- At the root of sunburn are damaging molecules, free radicals that increase when the skin gets too much sun.
- This electricity splits the water molecules in an electrolyte, producing hydrogen.
- It works by affecting a molecule called nitric oxide, which expands blood vessels.
- In the water molecule there are three atoms: two of hydrogen and one of oxygen.
Synonyms particle, bit, little bit, tiny bit, tiny piece, fragment, fraction, grain, granule, crumb, morsel, mite, mote, speck, spot, dot
OriginLate 18th century: from French molécule, from modern Latin molecula, diminutive of Latin moles ‘mass’. |