astatine


as·ta·tine

noun \ˈas-tə-ˌtēn\

Definition of ASTATINE

:  a radioactive halogen element discovered by bombarding bismuth with alpha particles and also formed by radioactive decay — see element table

Origin of ASTATINE

Greek astatos unsteady, from a- + statos standing, from histanai to cause to stand — more at stand
First Known Use: 1947

as·ta·tine

noun \ˈas-tə-ˌtēn\   (Medical Dictionary)

Medical Definition of ASTATINE

: a radioactive halogen element discovered by bombarding bismuth with helium nuclei and also formed by radioactive decay—symbol At; called also ekaiodine; see element table

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