13-letter words containing e, x, p, r
- time exposure — a long exposure in which the shutter is opened and closed by hand or by a mechanism other than the automatic mechanism of the shutter.
- underexposure — inadequate exposure, as of photographic film.
- unexperienced — wise or skillful in a particular field through experience: an experienced teacher.
- unexplanatory — serving to explain: an explanatory footnote.
- x-ray therapy — treatment of a disease using controlled quantities of x-rays.
- xerophthalmia — abnormal dryness of the eyeball characterized by conjunctivitis, caused by a deficiency of tears and attributed to a lack of vitamin A.
- xerophthalmic — Of or pertaining to xerophthalmia.
- zf expression — (programming) (After Zermelo Fränkel set theory). David Turner's name for list comprehension.
- zoopraxiscope — an early type of motion-picture projector, designed by Eadweard Muybridge, in which the images were drawings or photographs placed along the rim of a circular glass plate, the shutter was a rotating opaque disk with radial slots, and a limelight source was used.