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单词 fm
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Fmn.

Brit. /ˌɛfˈɛm/, U.S. /ˌɛfˈɛm/
Origin: Formed within English, by clipping or shortening. Etymon: fermium n.
Etymology: Symbolic abbreviation for fermium n.
The element fermium.Physical Review (quot. 19551) records that Ghiorso's paper was received by the journal on 20 June 1955.
ΚΠ
1955 A. Ghiorso et al. in Physical Rev. Aug. 1049/1 We suggest..for the element with the atomic number 100 the name fermium (symbol Fm), after Enrico Fermi.
1955 Rocky Mount (N. Carolina) Evening Telegram 15 Aug. 4 a/2 The symbol for element 99, einsteinium, is plain E. That for 100 is Fm.
1982 D. A. Johnson Some Thermodynamic Aspects Inorg. Chem. (ed. 2) vi. 170 Cf2+(aq), Es2+(aq) and Fm2+(aq) would probably reduce water.
2007 Jrnl. Alloys & Compounds 444 64/1 The extrapolated volumes for Fm, Md and No suggest a volume curve for the divalent metals.
This is a new entry (OED Third Edition, December 2013; most recently modified version published online March 2022).

> as lemmas

F.M.
F.M. n. field-magnet.
ΚΠ
1893 W. P. Maycock Electr. Lighting ii. viii. §134 The F.M.s of an alternator must be separately excited.
extracted from Fn.
F.M.
F.M. n. (also f.m.) frequency modulation.
Π
1942 Electronic Engin. 14 640 A special f.m. amplifier.
1962 A. Nisbett Technique Sound Studio 240 Amplitude modulation (AM), a method whereby the information in an audio signal is carried on the much higher frequency of a radio wave. The envelope of the amplitude of the radio wave in successive cycles is equivalent to the wave form of the initial sound. Historically, AM is the method which was used first and such transmissions now crowd the short, medium and long wave bands... For high quality transmission AM has largely given way to FM (frequency modulation).
extracted from Fn.
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n.1955
as lemmas
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