a: camera obscura b: a device that consists of a lightproof chamber with an aperture fitted with a lens and a shutter through which the image of an object is projected onto a surface for recording (as on film) or for translation into electrical impulses (as for television broadcast). â off camera. 1.
/seÂ·quesÂ·ter/ (se-kwesÂ´ter) 1. to detach or separate abnormally a small portion from the whole. See sequestration and sequestrum. 2. to isolate a constituent of a chemical system by chelation or other means.
sedÂ·iÂ·ment. n. 1. Material that settles to the bottom of a liquid; lees. 2. Solid fragments of inorganic or organic material that come from the weathering of rock and are carried and deposited by wind, water, or ice.[Latin. , act of settling, from. , to sit, settle; see sed-in Indo-European roots .].ediment. Matter that settles on a bottom or collects on a surface by a natural process: deposit, dreg (often used in plural), lees, precipitate, precipitation.