obtundent
/əbˈtʌnd(ə)nt/ /ɒbˈtʌnd(ə)nt/Medicine
noun
A medicinal substance that has a blunting or dulling effect (on inflammation, pain, etc.); (Dentistry ) a local anaesthetic. Now rare.
adjective
Having the property of dulling or blunting; acting as an anaesthetic. rare.
Origin
Mid 19th century; earliest use found in William T. Brande (1788–1866), chemist. From classical Latin obtundent-, obtundēns, present participle of obtundere; compare -ent.