ar·chi·di·das·ca·los \| ̷ ̷ ̷ ̷_də̇ˈdaskəˌläs, -ˌdīˈd-, -_ləs\noun orar·chi·di·das·ca·lus\-_ləs\ (pluralarchididasca·li \-ˌlī\) Etymology: Late Greek archididaskalos, from Greek archi- + didaskalos teacher, from didaskein to teach — more at docile : a chief teacher (as a headmaster in a school)