from the GNU version of the Collaborative International Dictionary of English.
- noun (Physics, Chemistry) A method for identifying chemical composition of substances by use of a
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun physics, analytical chemistry An
analytical techniquethat measures the mass/ charge ratioof the ionsformed when a moleculeor atomis ionized, vaporizedand introduced into a vacuum. Mass spectrometry may also involve breaking molecules into fragments- thus enabling its structureto be determined.
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