A handbook or manual; a small treatise meant to be carried in the hand.
From Greek 'encheiridion' or 'enkheiria,' combining 'en-' (in) and 'cheira' (hand). The word literally meant 'in the hand,' referring to portable reference books.
The encheiridion tradition produced famous pocket guides like Epictetus's 'Enchiridion'—ancient versions of modern self-help books designed to fit in a soldier's or traveler's pack.
Complete word intelligence in one call. Free tier — 50 lookups/day.