Definition of -ical
: -ic <symmetrical> <geological> —sometimes differing from -ic in that adjectives formed with -ical have a wider or more transferred semantic range than corresponding adjectives in -ic
Origin of -ical
Middle English, from Late Latin -icalis (as in clericalis clerical, radicalis radical)
Seen and Heard
What made you want to look up -ical? Please tell us where you read or heard it (including the quote, if possible).