A serious complication of peptic ulcers where the ulcers penetrate through the stomach or duodenum allowing their contents to enter the peritoneal space
A series of small slits produced on a folder in the printed sheet, parallel to the fold at the bind edge, which permits the paper to be separated easily at these slits (perforations); also called Commercial Perforation to top
Perforations are small holes that are made in something, especially in paper. Tear off the form along the perforations and send it to Sales
A line of cuts or punches which allows paper to be torn off easily - for instance, to remove a reply card
Holes of precise dimensions/spacing that is pressed into paper for ease of separating
a series of cuts or holes manufactured on a sheet of paper to weaken it in a certain spot for easy tearing
the act of punching a hole (especially a row of holes as for ease of separation) a line of small holes for tearing at a particular place a hole made in something; "a perforation of the eardrum
The punching out of holes between stamps to make separation easy 1) Comb perforation-three sides of a stamp are perforated at once, with the process repeated in rows 2) Harrow perforation-the entire sheet or unit of stamps is perforated in one operation 3) Line perforation-holes are punched one row at a time Line perforations are distinguished by the uneven crossing of perforation lines and irregular corners Comb and harrow perforations usually show alignment of holes at the corners Some forms of perforation may be difficult to distinguish
To make slits in the paper during folding, at the fold, to prevent wrinkles and allow air to escape Books which perfect bind are perforated on the spine fold to aid in binding to top
To perforate something means to make a hole or holes in it. I refused to wear headphones because they can perforate your eardrums. + perforated per·fo·rat·ed Keep good apples in perforated polythene bags. to make a hole or holes in something
To bore through; to pierce through with a pointed instrument; to make a hole or holes through by boring or piercing; to pierce or penetrate the surface of
The holes that are spaced along the length of the film in still cameras The perforation function as a guide for precision registration of film and also assist with the mechanical movement from frame to frame
Regularly spaced and accurately shaped holes which are punched throughout the length of a motion picture film These holes engage the teeth of various sprockets and pins by which the film is advanced and positioned as it travels through cameras, processing machines, and projectors ( Single or Double perforated film stock )