Marker

Science / Genetics / Marker: A gene with a known location on a chromosome and a clear-cut phenotype, used as a point of reference when mapping a new mutant.

Ball Marker

Entertainment / Golf / Ball Marker: (also 'marker') usually a small, flat object (like a dime) used to mark the ball's position (usually, but not exclusively) on the green while other players putt and/or the ball is cleaned MORE

Tee Markers

Entertainment / Golf / Tee Markers: (also 'markers, tee blocks, blocks') two objects that indicate the foreward boundary of the teeing area MORE

Markers

Entertainment / Golf / Markers: (also 'tee markers, blocks, tee blocks') two objects that indicate the foreward boundary of the teeing area MORE

Range Markers

Technology / Radar / Range Markers: Equally spaced concentric rings of light on the ppi which permit the radar observer to determine the range to a contact in accordance with the range setting or the range of the outer rings. See variab MORE

Variable Range Marker

Technology / Radar / Variable Range Marker: A luminous range circle or ring on the ppi, the radius of which is continuously adjust able. The range setting of this marker is read on the range counter of the radar indicator. MORE

Midcourt Area Marker

Entertainment / Basketball / Midcourt Area Marker: One of four lines extending 3 feet in from a sideline, 28 feet from and parallel to a baseline. MORE

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