apical Syllabification: (a·pi·cal)Pronunciation: /ˈāpikəl, ˈap-/Definition of apical adjective technical of, relating to, or denoting an apex. Phonetics (of a consonant) formed with the tip of the tongue. Origin: early 19th century: from Latin apex, apic- (see apex) + -alapical in other Oxford dictionaries Definition of apical in the British & World English dictionary