Algometer \Al*gom"e*ter\, n. [Gr. ? pain + -meter.] (Psychol.) An instrument for measuring sensations of pain due to pressure. It has a piston rod with a blunted tip which is pressed against the skin. -- {Al*gom"e*try}, n. -- {Al`go*met"ric}, {*met"ric*al}, a. -- {Al`go*met"ric*al*ly}, adv.