rn

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
noun a graduate nurse who has passed examinations for registration

"Tu--u--rn," says Neville, "to--to--to--" and so on for a minute or two; at last he burst out, "Confound it, man! you'll get there before I can tell you!" — The Jest Book: The Choicest Anecdotes and Sayings, Mark Lemon
]lf [o:] ([=oo]) as in do--d[o:] oa ([=o]) as in boat--b[=o]at [=oo] ([o:]) as in moon--m[=oo]n [)oo] ([o.]) as in foot--f[)oo]t [=u] as in pure--p[=u]re [)u] as in cup--c[)u]p [^u] as in burn--b[^u]rn [u.] — De La Salle Fifth Reader, Christian Brothers
“If we could get a breed of gals that didn’t care, now, for their young uns,” said Marks; “tell ye, I think ’t would be ’bout the greatest mod’rn improvement I knows on,”—and Marks patronized his joke by a quiet introductory sniggle. — Uncle Tom's Cabin, Harriet Beecher Stowe

radon, atomic number 86

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