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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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peeling off in shreds or layers.
not native or indigenous to a region. May be invasive. Contrast with introduced species, native species, and naturalized species.
ability of a root to resume its original direction of growth after being deflected by an object.
|extra-high-strength (EHS) cable||
type of 7-strand steel cable, often used to cable trees. Stronger but less flexible than common-grade cable. Must be terminated with dead-end tree grips.
oozing from pores or breaks in cell membranes.
cable anchor with a closed eye, usually machine threaded. Only drop-forged eye bolts are accepted and approved for tree support systems in the United States.
see dead-eye sling.
(1) in cabling, a closed termination loop, hand formed in common-grade cable by wrapping the successive strands back upon the standing part to attach the cable to anchor hardware. (2) a splice that forms a closed eye or loop.
sling (usually a length of spliced rope) with an eye at each end. Also called eye-and-eye sling.
notch cut used to help control the direction of fall of trees or branches being removed.
wedge-shaped cut forming the front of the hinge. Used to help control the direction of fall of trees or branches being removed. Scarf cut.
part of the rigging line from the rigging point to the anchor point. Contrast with lead.
equipment and techniques designed to ensure a climber will not fall from a tree or an aerial lift.
device installed in a tree to hold and direct ropes during climbing or rigging because there is not a suitable natural crotch available, or to protect an available crotch, and/or to reduce wear on ropes.
taxonomic group under the order level and above the genus level.
|feeder (distribution feeder)||
high-priority electric distribution supply line, generally 12,000 to 34,500 volts, that carries electricity from distribution substations to other primary distribution supply lines or distribution transformers.
(1) incomplete path of respiration in the absence of sufficient oxygen. (2) the conversion of sugars to alcohol and other metabolites by the action of microorganisms that may invade a tree
(1) elongated, tapering, thick-walled cell that provides strength to wood. (2) smallest component of a rope.
maximum soil moisture content following the drainage of water due to the force of gravity. Compare to available water, gravitational water, permanent wilting point, and saturation point.
metal device used to provide friction on a rope in climbing or very light rigging. See descender.
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