Word of the Day: Refractory

Phonetic: /re·frac·to·ry/
Part of Speech: Adjective
Definition
resisting control or authority : stubborn, unmanageable

resistant to treatment or cure
a refractory lesion

unresponsive to stimulus

immune, insusceptible
after recovery they were refractory to infection

difficult to fuse, corrode, or draw out
especially : capable of enduring high temperature