say it: ruh-FRAK-tur-ee
refractory is an adjective and noun meaning "not responding to treatment". It carries 4 recorded senses.
not responding to treatment
“a stubborn infection”
“a refractory case of acne”
“stubborn rust stains”
temporarily unresponsive or not fully responsive to a process or stimulus
“the refractory period of a muscle fiber”
stubbornly resistant to authority or control
“a fractious animal that would not submit to the harness”
“a refractory child”
lining consisting of material with a high melting point; used to line the inside walls of a furnace
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for refractory come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.