English noun: halogen | |||
1. | halogen (substance) any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions | ||
Broader (hypernym) | group, grouping | ||
Narrower (hyponym) | astatine, At, atomic number 17, atomic number 35, atomic number 53, atomic number 85, atomic number 9, Br, bromine, chlorine, Cl, F, fluorine, I, iodin, iodine | ||