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.
1. abnormal separation of a part from a whole, as a portion of a bone by a pathological process, or a portion of the circulating blood in a specific part occurring naturally or produced by application of a tourniquet. 2. isolation of a patient. feline corneal sequestration. see corneal sequestrum. pulmonary sequestration.