Word of the Day – Enchiridion

Enchiridion (noun)

en-kay-rid-ee-on

A book containing essential information on a subject.

Late Middle English: via late Latin from Greek enkheiridion, from en- ‘within’ + kheir ‘hand’ + the diminutive suffix -idion.

Example sentences

“You’ll want to read it, it’s the enchiridion for this subject.”