Appressed.Īdsorption: adhesion on contact of the molecules of gases, dissolved substances, or liquids to the surface of solids or liquids with which they are in contact. Pressed close to or lying flat against something. Contrast with chronic.Īdaptability: genetic ability of plants and other living organisms to adjust or acclimate to different environments.Īdjustable balancer: adjustable rigging sling used to balance limbs in rigging operations. A nonlocking carabiner is single action, requiring one movement for the gate to be opened.Īcuminate: term describing leaves that taper sharply at their tip (apex).Īcute: disorder or disease that occurs suddenly or over a short period of time. Actinomycetes play a role in the decomposition of organic matter and the release of mineral elements.Īction: pertaining to carabiners and snaps, the number of distinct motions for the gate to be opened. See pH.Īctinomycetes: group of soil bacteria resembling fungi.
Contrast with alkaline.Īcidity: state or quality of being acid. (2) climbing line installed in a tree to gain access to, but not used to work, the tree.Īccess route: defined entrance and exit route for a property during construction, tree work, or landscape operations.Īcclimation: physiological adaptation process of plants and other living organisms to a climate or environment different from their native environment or where originally grown.Īcid: having a pH less than 7.0. See vector and velocity.Īccess line: (1) second climbing line hung in a tree in case it is needed to reach a victim in an emergency. Contrast with adsorption.Īcceleration: rate of change of the velocity of an object. Most absorbing roots are within the top 12 inches (30 centimeters) of soil.Ībsorption: taking up. Plays a role in wounding responses and in abscission of leaves and fruit.Ībscission: leaf or fruit drop induced by hormonal changes.Ībscission zone: area at the base of the petiole where cellular breakdown leads to leaf and fruit drop.Ībsorbing roots: fine, fibrous roots that take up water and minerals. Inhibits shoot growth but may promote root growth. Arboriculture Glossary of Terms There are 1070 entries in this glossary.ĪBC (aerial bundle cable): system of reducing the physical hanging space of aboveground electrical conductors.Ībiotic disorder: plant malady caused by nonliving, environmental, or man-made agents.Ībscisic acid (ABA): plant hormone that stimulates stomatal closure and promotes seed and bud dormancy.
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