fric ‧ a ‧ tive /ˈfrɪkətɪv/ BrE AmE noun [countable] technical
[ Date: 1800-1900 ; Language: Modern Latin ; Origin: fricativus , from Latin fricare ; ⇨ ↑ friction ]
a sound, such as /f/ or /z/, made by forcing your breath through a narrow opening between your lips and teeth, or your tongue and teeth