Chambers 20th Century Dictionary(0.00 / 0 votes)Rate this definition: Engross. en-grÅsâ², v.t. to occupy wholly, monopolise: to absorb: to copy a writing in a large hand or in distinct characters: to write in legal form: to make gross.âns.
Pupillary distance (PD) is the measurement (in millimeters) of the distance between the pupils of your eyes. Pupillary distance is an important measurement used to determine the proper lens shape and alignment of your prescription correction to your line of vision.
How to Measure Your Pupillary Distance (PD) 1  1. Stand 8 in. away from a mirror. 2  2. Hold a ruler against your brow. 3  3. Close your right eye then align the rulerâs 0 mm with the center of your left pupil. 4  4. Look straight then close your left eye and open your right eye. 5  5. The mm line that lines up to the center of your right pupil is your PD.