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| The acute angle formed between the path of a blood drop and the surface that it contacts. |
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| The area on a two-dimensional plane where lines traced through the long axis of several individual bloodstains meet. This approximates the two-dimensional place from which the bloodstains were projected. |
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| The location in three-dimensional space that blood that produced a bloodstain originated from. The location of the area of convergence and the angle of impact for each bloodstain is used to approximate this area. |
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| A characteristic bloodstain pattern containing spurts that resulted from blood exiting under pressure from an arterial injury. |
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| Blood directed back toward the source of the force that caused the spatter. |
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| A bloodstain pattern that is created when blood is flung from a blood-bearing object in motion onto a surface. |
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| A pattern of bloodstains formed by the dripping of blood off a moving surface or person in a recognizable pathway separate from other patterns. |
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| A pattern created by blood that is expelled out of the nose, mouth, or respiratory system as a result of air pressure and/or airflow. |
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| A bloodstain pattern formed by the movement of small or large amounts of blood as a result of gravity's pull. |
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| Blood that travels away from the source in the same direction as the force that caused the spatter. |
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| An impact spatter pattern created by a force traveling at 100 feet per second or faster and producing droplets with diameters less than 1 millimeter. |
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| A bloodstain pattern produced when an object makes forceful contact with a source of blood, projecting droplets of blood outward from the source. |
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| An impact spatter pattern created by a force traveling at 5 feet per second or less and producing droplets with diamters greater than 3 millimeters. |
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| An impact spatter pattern created by a force traveling at 5 to 25 feet per second and producing droplets with diameters between 1 and 3 millimeters. |
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| The method used to support a likely sequence of events at a crime scene by the observation and evaluation of physical evidence and statements made by individuals involved with the incident. |
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| Small droplets of blood that are distributed around the perimeter of a drop or pool of blood and were produced as a result of the blood impacting the target surface. |
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| The process by which the edges of a stain dry to the surface in a specific period of time (dependent on environmental and surface conditions). Skeletonization will remain apparent even after the rest of the bloodstain has been disturbed from its original position. |
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| A bloodstain pattern created when a surface that carries wet blood comes in contact with a second surface. Recognizable imprints of all or a portion of the original surface or the direction of movement may be observed. |
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Definition
| An area within a deposited spatter pattern that is clear of spatter, caused by an object or person blocking the area at the time of the sptter's deposition. |
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