-tronsuffix

Primary stress is retained by the usual stressed syllable of the preceding element.

Etymology: The ending of electron n.² (but compare Greek -τρον instrumental suffix).

Physics.

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1. Used in the names of some kinds of thermionic valves and other electron tubes, as kenotron (1915), pliotron (1915), ignitron (1933).

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2. Used in the names of a few subatomic particles, as positron (1933), negatron (1934), mesotron (1938): cf. -on suffix¹.

3. Used in the names of devices and machines, spec. particle accelerators, as cyclotron (1935), betatron (1941), phantastron (1943), levitron (1960).

ΚΠ

1939 Nature 8 Apr. 602/1 -tron should be restricted to signify either an instrument or a particle, but not both…-on taken by itself..seems the most natural ending for a particle.

1949 Nature 13 Aug. 263/2 The Amsterdam conference [of the International Union of Physics] attempted to dispose of the curious modern theory that the ancient Greek termination for a fundamental particle was ‘-tron’. It blessed the word ‘meson’ as against its rivals.

This entry has not yet been fully updated (first published 1915; most recently modified version published online September 2020).

单词	-tron
释义	-tronsuffix Primary stress is retained by the usual stressed syllable of the preceding element. Etymology: The ending of electron n.² (but compare Greek -τρον instrumental suffix). Physics. Categories » 1. Used in the names of some kinds of thermionic valves and other electron tubes, as kenotron (1915), pliotron (1915), ignitron (1933). Categories » 2. Used in the names of a few subatomic particles, as positron (1933), negatron (1934), mesotron (1938): cf. -on suffix¹. 3. Used in the names of devices and machines, spec. particle accelerators, as cyclotron (1935), betatron (1941), phantastron (1943), levitron (1960). ΚΠ 1939 Nature 8 Apr. 602/1 -tron should be restricted to signify either an instrument or a particle, but not both…-on taken by itself..seems the most natural ending for a particle. 1949 Nature 13 Aug. 263/2 The Amsterdam conference [of the International Union of Physics] attempted to dispose of the curious modern theory that the ancient Greek termination for a fundamental particle was ‘-tron’. It blessed the word ‘meson’ as against its rivals. This entry has not yet been fully updated (first published 1915; most recently modified version published online September 2020). < suffix1939
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