geislavirkni

== Icelandic == === Etymology === From geisli (“ray”) +‎ virkni (“activity”). === Noun === geislavirkni f (genitive singular geislavirkni, no plural) radioactivity ==== Declension ==== ==== Related terms ==== geislavirkur (“radioactive”) === Further reading === “geislavirkni” in the Dictionary of Modern Icelandic (in Icelandic) and ISLEX (in the Nordic languages)