est her i an

& 8. [Mod. Lat. estheria, and Eng., ., suff. -an.] A. As adj .: Akin, pertaining, or relating to the Estheria (q. v.). B. As subst .: A fo il crustacean of the genus Estheria. ěs-the-si-om-ě-tër, s. [Gr. a is thesis perception, sensibility, and metron =a measure.] Surg.: An instrument to ascertain the tactile sensibility of the human body. It has two points, adjustable as to distance, and the object is to ascertain the greatest proximity at which the points give distinct sensations. The result is indicative of a normal or abnormal condition of the surface. [NERVE-NEEDLE.]