ASTATINE

Pronunciation (US):

(GB):

 Dictionary entry overview: What does astatine mean? 

• ASTATINE (noun)
  The noun ASTATINE has 1 sense:

1. a highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

  Familiarity information: ASTATINE used as a noun is very rare.

 Dictionary entry details 

• ASTATINE (noun)

Sense 1

Meaning:

A highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium

Classified under:

Nouns denoting substances

Synonyms:

astatine; At; atomic number 85

Hypernyms ("astatine" is a kind of...):

chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)

halogen (any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions)

 Context examples 

A cyclic compound in which at least one hydrogen is replaced by a halogen (chlorine, bromine, iodine, fluorine, astatine) and exposure to this compound can increase the risk human cancer.

(Halogenated Ring Carcinogen, NCI Thesaurus)

A compound with carcinogenic activity that has a carbon-based backbone that may be a cyclic or non-cyclic structure with single, double or triple bonds and can have other elements besides hydrogen incorporated in its structure but has at least one halogen (chloride, bromide, fluoride, iodide, and astatine) atom substituted for one of the hydrogen atoms.

(Organo-halide Carcinogen, NCI Thesaurus)

Molecules with carcinogenic activity that almost entirely consist of carbon and hydrogen that may be cyclic or non-cyclic structures with single, double bonds or both but have at least one halogen element (chloride, bromide, fluoride, iodide, astatine) atom substituted for one of the hydrogen atoms.

(Carcinogenic Halogenated Hydrocarbon, NCI Thesaurus)