Hfn.

Brit.

/ˌeɪtʃˈɛf/, U.S.

/ˌeɪtʃˈɛf/

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

Etymology: Symbolic abbreviation for hafnium n.

Chemistry.

The element hafnium.

ΚΠ

1923 Science 2 Mar. 258/2 By a comparison of the intensity of the Ta-lines with the Hf-lines, a closer estimate of the amount of hafnium present has been obtained.

1950 N. V. Sidgwick Chem. Elements I. 629 Ce and Hf both have their valency electrons in the fifth and sixth quantum groups.

1993 Nature 1 Apr. 441/2 The presence or absence of garnet during ancient depletion events would therefore produce distinctly different present-day Hf isotope ratios.

This is a new entry (OED Third Edition, December 2013; most recently modified version published online March 2022).

H.F. n. (also h.f.) high frequency.

1913 Year-bk. Wireless Telegr. 289 To make the current-distribution over the cross-section more uniform for H.F. currents.

1923 Popular Wireless 13 Oct. (Suppl.) 10 ‘Plug-in’ H.F. Transformers.

1924 Exper. Wireless Apr. 397/2 The atmospheric band frequencies which penetrate the H.F. filter.

1942 Electronic Engin. 15 168 A hair-pin filament heated by h.f. current.

1967 New Scientist 25 May 455/3 All the frequencies in the HF band that are needed by the many transmitters at the station are produced by processing the ‘master’ frequency.

单词	hf
释义	Hfn. Brit. /ˌeɪtʃˈɛf/, U.S. /ˌeɪtʃˈɛf/ Origin: Formed within English, by clipping or shortening. Etymon: hafnium n. Etymology: Symbolic abbreviation for hafnium n. Chemistry. The element hafnium. ΚΠ 1923 Science 2 Mar. 258/2 By a comparison of the intensity of the Ta-lines with the Hf-lines, a closer estimate of the amount of hafnium present has been obtained. 1950 N. V. Sidgwick Chem. Elements I. 629 Ce and Hf both have their valency electrons in the fifth and sixth quantum groups. 1993 Nature 1 Apr. 441/2 The presence or absence of garnet during ancient depletion events would therefore produce distinctly different present-day Hf isotope ratios. This is a new entry (OED Third Edition, December 2013; most recently modified version published online March 2022). > as lemmas HF HF n. (also H ^f, H f, Hf) healthy female(s). Π 1880¹Hf [see sense 4]. extracted from Hn. H.F. H.F. n. (also h.f.) high frequency. Π 1913 Year-bk. Wireless Telegr. 289 To make the current-distribution over the cross-section more uniform for H.F. currents. 1923 Popular Wireless 13 Oct. (Suppl.) 10 ‘Plug-in’ H.F. Transformers. 1924 Exper. Wireless Apr. 397/2 The atmospheric band frequencies which penetrate the H.F. filter. 1942 Electronic Engin. 15 168 A hair-pin filament heated by h.f. current. 1967 New Scientist 25 May 455/3 All the frequencies in the HF band that are needed by the many transmitters at the station are produced by processing the ‘master’ frequency. extracted from Hn. < n.1923 as lemmas
随便看	desertworn deserty deservably deserve deserve ill or well of deserve or lose the bell deserve the bauble deserve to carry the buckler deserve well at a person's hands deserve well of deserved deservedly deservedness deservednesses deserveless deservelessly deserver deserveress deservers deserves deservice deservient deserving deserving of note deserving poor

Hfn.

> as lemmas