JETTISON Meaning of JETTISON in English jettison BrE AmE ˈdʒet ɪs ə n -ɪz-, -əs-, -əz- AmE \ ˈdʒet̬-▷ jettison|ed d▷ jettison|ing ɪŋ▷ jettison|s z Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012