IMPERISHABLE Meaning of IMPERISHABLE in English im ‧ per ‧ ish ‧ a ‧ ble /ɪmˈperɪʃəb ə l/ BrE AmE adjective formal existing or continuing for a long time or for ever:a set of imperishable truths Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012