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Arboriculture Glossary of TermsThere are 1070 entries in this glossary.
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variation of the French Prusik. Used as a friction hitch in climbing and rigging.
naturally occurring subdivision of a species having a distinct difference and breeding true to that difference. Compare to cultivar.
darkening of the vascular tissues of woody plants in response to disease.
tissue that conducts water or nutrients.
(1) in pathology, biotic or abiotic agent that transmits a pathogen. (2) in mechanics or rigging, quantity that has both a magnitude and a direction (e.g., force); see acceleration and velocity.
management and control of vegetation to achieve established goals and objectives. See Integrated Vegetation Management.
simply, speed. Rate at which an object
arrangement of veins in a leaf.
an aeration or fertilization technique. Drilling vertical holes in the soil and filling them with materials to improve aeration.
end-to-end, tubelike, water-conducting cells in the xylem of angiosperms.
|vigor (vigour, in British English)||
overall health. Capacity to grow and resist stress. Sometimes limited in reference to genetic capacity.
ultramicroscopic, infectious agent (piece of nucleic acid) that can reproduce only in living cells of other organisms. Can cause disease.
selective pruning to enable a view from a predetermined point.
overall health. Ability of a plant to deal effectively with stress.
Measure of electric potential or electromotive force. A potential of one volt appears across a resistance of one ohm when a current of one ampere flows through that resistance.
difference in electrical potential between any two conductors or between a conductor and ground. It is a measure of the electric energy per electron that electrons can acquire and/or give up as they move between the two conductors.
(1) pertaining to electric utilities, device used to maintain the voltage within the electrical conductors at a constant level and within the defined tolerances. (2) device in the electrical system of a vehicle or equipment engine.
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