from The Century Dictionary.
- Having a small or narrow opening.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective optics Of an optical eye-piece, having only a narrow opening, so as to increase the accuracy of the
Sorry, no etymologies found.
The photographing apparatus consists of a shutter, a quartz lens, and a stenopaic slit, 76 by 1.7 mm., between the lens and the sensitized film on the rotary drum.
a quartz lens, and coincides with the center of a stenopaic slit and the axis of the revolving drum carrying the film.