/pəˈræmɪtə(r) ||; pəˈræmətɚ/noun [C] [usu.pl] (formal 正式) something that decides or limits the way in which sth can be done 起决定或限定作用的因素；界限: to set/define the parameters 设定╱明确界限We had to work within the parameters that had already been established. 我们必须在已经确立的范围内工作。