en·chi·rid·i·on noun alsoen·chei·rid·i·on\ˌen]ˌkīˈridēən, ˌeŋ], ]_kə̇ˈ-, -ēˌän\ (-s) Etymology: Late Latin enchiridion, from Greek encheiridion, from en in + cheir hand + -idion -idium — more at in, chir- : handbook, manual < a bulky enchiridion for pious women — Israel Zangwill >