enchiridion

/ˌɛn.kaɪˈɹɪ.dɪ.ən/

enchiridion means A handbook or manual. Lexicurio rates it Rare gem — a strength score of 81 out of 100.

enchiridion is pronounced /ˌɛn.kaɪˈɹɪ.dɪ.ən/.

Why “enchiridion” is a great word

ENCHIRIDION — [Noun] A concise manual or handbook designed for ready reference and portability. From Ancient Greek ἐγχειρίδιον (enkheirídion, "handbook"), from ἐν (en, "in") + χείρ (kheír, "hand") + the diminutive suffix -ίδιον (-ídion); first attested in English in the 1540s. Unlike a "compendium," which seeks comprehensive summation, or a "tome," which carries the weight of scholastic heft, an enchiridion is a distillation meant for the pocket or palm. It is the dog-eared guide to knots in a sailor’s oilskin, the leather-bound field guide softening in a botanist’s satchel, the thumb-smudged maxims of a philosopher kept close against doubt—a small weight of knowledge, warm from the hand, and consulted in the midst of life.

Etymology

Either via Latin enchīridion or directly, from Ancient Greek ἐγχειρίδιον (enkheirídion, “handbook, manual”), from ἐν (en, “in”) + χείρ (kheír, “hand”) + -ίδιον (-ídion).

noun

A handbook or manual.“the Enchiridion of Erasmus”