A group of teleostean fishes destitute of spiny
fin-rays, as the cod.
1. (Med.) Measurement of the range of vision, esp. by means of the optometer. 2. As defined (with minor variations) in the statutes of various States of the United States: (a) "The employment of subjective and objective mechanical means to determine the accomodative and refractive states of the eye and the scope of its...