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obtund

ob·tund [ ob túnd ] (past and past participle ob·tund·ed, present participle ob·tund·ing, 3rd person present singular ob·tunds)


transitive verb 
Definition:
 
make something dull: to blunt, dull, or deaden something ( dated )

[14th century. < Latin obtundere "strike against" < tundere "to strike"]

ob·tund·ent adjective
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