. . . . . . . . . "pseudohalogen"@en . . . . . "pseudohalogen"@en . . . . . . . . "pseudohalogen"@en . . . . . . . . . . . . . . . . . . . . "polyatomic analogue of halogens, whose chemistry, resembling that of the true halogens, allows it to substitute for a halogen in several classes of chemical compounds"@en . . .