Rnn.

Brit.

/ˌɑːrˈɛn/, U.S.

/ˌɑrˈɛn/

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

Etymology: Symbolic abbreviation for radon n.

Chemistry.

The element radon.

ΚΠ

1923 Rep. Internat. Comm. Chem. Elem. (I.U.P.A.C.) in Jrnl. Amer. Chem. Soc. 45 870 The three radioactive emanations have been given the names radon, actinon and thoron, with the symbols Rn, An, Tn, to suggest both their origin and their chemical character as members of the family of the rare gases.

1931 Rev. Mod. Physics 3 432 Mache Unit (M.E.) is a concentration unit referred to the Rn content of 1 liter of water or gas, etc.

1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. xii. 445 Fluorides of Kr, Xe, and Rn have now been discovered.

1988 D. B. J. Easton et al. tr. C. Keller Radiochem. x. 194 The half-lives of the radon isotopes in the two series are different (t_½ values for ²²²Rn and ²¹⁹Rn are 3·8 d and 4·0 s respectively).

This is a new entry (OED Third Edition, June 2010; most recently modified version published online March 2022).

> as lemmas

RN n. Registered Nurse.

ΘΚΠ

the world > health and disease > healing > healer > nurse > [noun] > registered nurse

registered nurse1876

State Registered Nurse1903

RN1904

RGN1922

S.R.N.1922

1904 Amer. Jrnl. Nursing 4 408 Any woman who not being certified under this act..who shall take or use the name or title of registered nurse or the abbreviation R.N...shall be liable on summary conviction to a fine.

1973 Parade 18 Feb. 8/1 Incoming patients are evaluated by an RN as to their degree of urgency, and sent to the appropriate area.

1995 Nursing Times 22 Mar. 7/3 RNs who blow the whistle on poor standards of care risk punitive measures from managers.

RN n. Royal Navy.

ΘΚΠ

society > armed hostility > hostilities at sea > navy > [noun] > the British navy

the king's (also queen's) navya1382

Royal Navy1583

the navy royal1601

the fleet1712

RN?1791

the senior service1899

silent service1904

?1791 Addr. to Public (Soc. Improvem. Naval Archit.) Index 9 Bentinck, William, Esq; R. N. viz. Royal Navy.

1819 Trans. Soc. Arts 37 110 The Gold Medal of the Society was this Session voted to Mr. Thomas Cook, Lieut. R.N. for a Life Raft.

1946 ‘Tackline’ You met such Nice Girls xiii. 144 It is very strange..why R.N. officers are so much meaner with their clothing-coupons than R.N.V.R. officers.

2000 Guardian (Nexis) 17 Nov. 28 After four years in the RN, his long-running stomach ulcer saw him invalided out.

单词	rn
释义	Rnn. Brit. /ˌɑːrˈɛn/, U.S. /ˌɑrˈɛn/ Origin: Formed within English, by clipping or shortening. Etymon: radon n. Etymology: Symbolic abbreviation for radon n. Chemistry. The element radon. ΚΠ 1923 Rep. Internat. Comm. Chem. Elem. (I.U.P.A.C.) in Jrnl. Amer. Chem. Soc. 45 870 The three radioactive emanations have been given the names radon, actinon and thoron, with the symbols Rn, An, Tn, to suggest both their origin and their chemical character as members of the family of the rare gases. 1931 Rev. Mod. Physics 3 432 Mache Unit (M.E.) is a concentration unit referred to the Rn content of 1 liter of water or gas, etc. 1965 C. S. G. Phillips & R. J. P. Williams Inorg. Chem. I. xii. 445 Fluorides of Kr, Xe, and Rn have now been discovered. 1988 D. B. J. Easton et al. tr. C. Keller Radiochem. x. 194 The half-lives of the radon isotopes in the two series are different (t_½ values for ²²²Rn and ²¹⁹Rn are 3·8 d and 4·0 s respectively). This is a new entry (OED Third Edition, June 2010; most recently modified version published online March 2022). > as lemmas RN RN n. Registered Nurse. ΘΚΠ the world > health and disease > healing > healer > nurse > [noun] > registered nurse registered nurse1876 State Registered Nurse1903 RN1904 RGN1922 S.R.N.1922 1904 Amer. Jrnl. Nursing 4 408 Any woman who not being certified under this act..who shall take or use the name or title of registered nurse or the abbreviation R.N...shall be liable on summary conviction to a fine. 1973 Parade 18 Feb. 8/1 Incoming patients are evaluated by an RN as to their degree of urgency, and sent to the appropriate area. 1995 Nursing Times 22 Mar. 7/3 RNs who blow the whistle on poor standards of care risk punitive measures from managers. extracted from Rn. RN RN n. Royal Navy. ΘΚΠ society > armed hostility > hostilities at sea > navy > [noun] > the British navy the king's (also queen's) navya1382 Royal Navy1583 the navy royal1601 the fleet1712 RN?1791 the senior service1899 silent service1904 ?1791 Addr. to Public (Soc. Improvem. Naval Archit.) Index 9 Bentinck, William, Esq; R. N. viz. Royal Navy. 1819 Trans. Soc. Arts 37 110 The Gold Medal of the Society was this Session voted to Mr. Thomas Cook, Lieut. R.N. for a Life Raft. 1946 ‘Tackline’ You met such Nice Girls xiii. 144 It is very strange..why R.N. officers are so much meaner with their clothing-coupons than R.N.V.R. officers. 2000 Guardian (Nexis) 17 Nov. 28 After four years in the RN, his long-running stomach ulcer saw him invalided out. extracted from Rn. < n.1923 as lemmas
随便看	franklin stove franklin's rod franklinian franklinic franklinism franklinist franklinite franklinites franklinization franklinize franklinized franklins frankly frankmarriage frankness frankness of speech franknesses frankpledge frankpledges frankpost franks franktenement franktenementary franktenementer franktenure