-onsuffix¹

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

Origin: Of multiple origins. Partly formed within English, by clipping or shortening. Partly a borrowing from Greek. Etymons: electron n.²; Greek -ον.

Etymology: < -on (in electron n.², itself after earlier ion n.), reinforced in both senses by -ον as a termination of Greek neuter nouns and adjectives and their derivatives, and (especially in sense 2) perhaps by ancient Greek ὄν being (compare -ont comb. form).Productive from the end of the 19th cent. Compare magneton n. (after French), osteon n. (after German). With sense 1 compare -tron suffix 2.

Categories »

1. Physics. Used to form the names of subatomic particles, as hyperon, meson (meson n.³), neutron, proton (proton n. 2b), and of quanta, as graviton, phonon, photon (photon n.¹ 3).

Categories »

2. Used to form the names of entities conceived of as discrete or basic units, as chronon, lexon, pedon, photon (photon n.¹ 1, 2), psychon, syngameon, virion; esp. in molecular and theoretical biology, as codon, muton, operon, recon, replicon, transposon.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online September 2019).

-onsuffix²

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

Origin: Formed within English, by clipping or shortening. Etymon: argon n.

Etymology: < -on (in argon n.; other names of noble gases from the neuter singular of Greek adjectives (e.g. krypton n., xenon n.) are probably after this). Productive in early 20th cent. in niton n.; compare also radon n., thoron n. (both < German).

Chemistry.

Categories »

Used to form the names of noble gases, as radon n., and the names of relatively unreactive halogenated hydrocarbons used chiefly as refrigerants, aerosol propellents, and fire suppressants, as Freon n., halon n.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online June 2019).

-onsuffix³

Primary stress is generally retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly.

Origin: A variant or alteration of another lexical item. Etymon: -one suffix.

Etymology: Variant of -one suffix, originally varying with it somewhat arbitrarily (compare margarone n., mellon n.), in the names of substances not conforming to the later systematic use of -one suffix. In early use, the spelling -on in English often reflects the influence of German forms in -on , as distinct from equivalent French forms in -one (compare cupferron n.). After -one suffix had developed a systematic use for the names of ketones and analogous compounds, -on continued to appear in the names of a more miscellaneous range of substances; in the names of pesticides, perhaps after malathion n.

Chemistry.

Categories »

Forming the names of chemical and proprietary substances, esp. pharmaceuticals and pesticides, as interferon, menazon, omnopon, syntocinon.

This is a new entry (OED Third Edition, June 2004; most recently modified version published online June 2019).

suffix¹

suffix²

suffix³

单词	-on
释义	-onsuffix¹ Primary stress is retained by the usual stressed syllable of the preceding element. Origin: Of multiple origins. Partly formed within English, by clipping or shortening. Partly a borrowing from Greek. Etymons: electron n.²; Greek -ον. Etymology: < -on (in electron n.², itself after earlier ion n.), reinforced in both senses by -ον as a termination of Greek neuter nouns and adjectives and their derivatives, and (especially in sense 2) perhaps by ancient Greek ὄν being (compare -ont comb. form).Productive from the end of the 19th cent. Compare magneton n. (after French), osteon n. (after German). With sense 1 compare -tron suffix 2. Categories » 1. Physics. Used to form the names of subatomic particles, as hyperon, meson (meson n.³), neutron, proton (proton n. 2b), and of quanta, as graviton, phonon, photon (photon n.¹ 3). Categories » 2. Used to form the names of entities conceived of as discrete or basic units, as chronon, lexon, pedon, photon (photon n.¹ 1, 2), psychon, syngameon, virion; esp. in molecular and theoretical biology, as codon, muton, operon, recon, replicon, transposon. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online September 2019). -onsuffix² Primary stress is retained by the usual stressed syllable of the preceding element. Origin: Formed within English, by clipping or shortening. Etymon: argon n. Etymology: < -on (in argon n.; other names of noble gases from the neuter singular of Greek adjectives (e.g. krypton n., xenon n.) are probably after this). Productive in early 20th cent. in niton n.; compare also radon n., thoron n. (both < German). Chemistry. Categories » Used to form the names of noble gases, as radon n., and the names of relatively unreactive halogenated hydrocarbons used chiefly as refrigerants, aerosol propellents, and fire suppressants, as Freon n., halon n. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online June 2019). -onsuffix³ Primary stress is generally retained by the usual stressed syllable of the preceding element and vowels may be reduced accordingly. Origin: A variant or alteration of another lexical item. Etymon: -one suffix. Etymology: Variant of -one suffix, originally varying with it somewhat arbitrarily (compare margarone n., mellon n.), in the names of substances not conforming to the later systematic use of -one suffix. In early use, the spelling -on in English often reflects the influence of German forms in -on , as distinct from equivalent French forms in -one (compare cupferron n.). After -one suffix had developed a systematic use for the names of ketones and analogous compounds, -on continued to appear in the names of a more miscellaneous range of substances; in the names of pesticides, perhaps after malathion n. Chemistry. Categories » Forming the names of chemical and proprietary substances, esp. pharmaceuticals and pesticides, as interferon, menazon, omnopon, syntocinon. This is a new entry (OED Third Edition, June 2004; most recently modified version published online June 2019). < suffix¹suffix²suffix³
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