Meaning

adjective of or relating to the study of history

adjective having once lived or existed or taken place in the real world as distinct from being legendary

adjective belonging to the past; of what is important or famous in the past

originFrom Latin historicus (“historical”) + -al (forming adjectives denoting of or relating to). By surface analysis, history + -ical.

Etymology from Wiktionary, CC BY-SA 3.0