being of crucial importance; "a pivotal event"; "Its pivotal location has also exposed it to periodic invasions"- Henry Kissinger; "the polar events of this study"; "a polar principal"
(psychology) the aggregate of the responses or reactions or movements made by an organism in any situation
the action or reaction of something (as a machine or substance) under specified circumstances; "the behavior of small particles can be studied in experiments"
a commercially sponsored ad on radio or television
connected with or engaged in or sponsored by or used in commerce or commercial enterprises; "commercial trucker"; "commercial TV"; "commercial diamonds"
of the kind or quality used in commerce; average or inferior; "commercial grade of beef"; "commercial oxalic acid"
of or relating to commercialism; "a commercial attache"; "commercial paper"; "commercial law"