apertive

Both its root and seeds are hydragogeous, and very apertive, and therefuore usefull in hydroptical and watry diseases.

In this part the author leaves the stylus method and passes on to the interference method, which is very valuable because it can resolve scratches down to a width of about 0.00002" or 0.00003", provided that a high apertive microscope objective is used.

Prefractures are weak or apertive when the prefixed vowel has a greater closure formed by the tongue or lips than the original vowel, so that the result is a progressive opening.