alphabet

obdurate

Definition of obdurate:

part of speech: adjective

Hardened in heart; stubborn; callous; obstinate in wickedness.

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protractor

A math. instr. for laying down and measuring angles on paper that have been taken in the field; in anat., a muscle that draws forward any part; in surg., an instr. for drawing extraneous bodies out of a wound. ...

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