WCS en · NOUN Meanings (abbreviation, alt-of, countable, initialism, uncountable) Initialism of worst-case scenario. alt of worst-case scenario (abbreviation, alt-of, countable, qualifier:oil industry, uncountable) Abbreviation of Western Canadian Select; A grade of crude oil originating in Canada, used as a pricing benchmark. alt of Western Canadian Select (abbreviation, alt-of, countable, initialism, uncountable) Initialism of Williams-Campbell syndrome. alt of Williams-Campbell syndrome Forms SpellingFeaturesLabelsSource WCSs Number=Plur lexicographic WCSes Number=Plur lexicographic Coordinates WTI