ir ‧ re ‧ duc ‧ i ‧ ble /ˌɪrɪˈdjuːsəb ə l◂, ˌɪrɪˈdjuːsɪb ə l◂ $ -ˈduː-/ BrE AmE adjective written
an irreducible sum, level etc cannot be made smaller or simpler ⇨ reduce
—irreducibly adverb
ir ‧ re ‧ duc ‧ i ‧ ble /ˌɪrɪˈdjuːsəb ə l◂, ˌɪrɪˈdjuːsɪb ə l◂ $ -ˈduː-/ BrE AmE adjective written
an irreducible sum, level etc cannot be made smaller or simpler ⇨ reduce
—irreducibly adverb
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012