Obscurant \Ob*scur"ant\, n. [L. obscurans, p. pr. of obscurare to obscure.] One who obscures; one who prevents enlightenment or hinders the progress of knowledge and wisdom. --Coleridge.
"If you know what type of sensors your adversary has, and you know what sensors you have, you can tailor your obscurant to affect him and not you," he said.
Army scientists are gaining ground in their quest for the ultimate smoke screen, a "universal obscurant" that would baffle an enemy, fool "smart" weapons and conceal friendly forces.