| Term | Scope | Definition | Editor |
|---|---|---|---|
| bark | dendrology | The protective outer layer of dead cells - cuticle | |
| BNG | |||
| bole | dendrology | Main part of the stem of a tree before it separate | |
| broad-leaf | dendrology | Trees other than conifer | |
| BS5837 | arboriculture | Trees in relation to design, demolition and constr | Kit on 2026-03-27 |
| burr | dendrology | Excrescence at base of tree - much sought-after by | |
| cambium | dendrology | Layer of living cells just under bark and at growi | |
| cambrian | dendrology | the layer of living cells which divide to form the | |
| canker | dendrology | Disease-damaged area of a tree usually caused by f | |
| catkin | dendrology | Male or female flowers hanging in chains: they lac | |
| Certificate of Lawfulness | TBD | ||
| champion | dendrology | ||
| CIL | planning | Levy payable by developer where GIA exceeed 100 sq | Kit on 2026-03-13 |
| Conservation Area | planning | Conservation areas have stricter planning controls | |
| crown | arboriculture | The entire branch system of a tree | |
| crown lift | arboriculture | This means removing lower branches to incease the | |
| crown reduction | arboriculture | The tree crown is reduced by shortening branches, | |
| crown thinning | arboriculture | This reduces the density of the tree's crown witho | |
| cuticle | dendrology | The protective surface layer of a stem or leaf, of | Kit on 2026-03-13 |
| DBH | arboriculture | Diameter at Breast Height | Kit on 2026-03-13 |
| dioecious | dendrology | having the male and female reproductive organs on | Kit on 2026-03-13 |
| disease | tree | A number of tree diseases such as ash dieback thre | |
| lignin | dendrology | ||
| maiden | dendrology | A tree that has grown from a seedling (naturally o | |
| Permitted Development | TBD | ||
| phloem | dendrology | the living tissue which transports sugars made by | |
| pith | dendrology | ||
| Planning use classes | planning | Retail classes Class A1 – shops and retail outlets | Kit on 2026-03-13 |
| Planningonline Website | planning | Bristol City Council provides online access to al | |
| pollard | dendrology | ||
| remarkable | dendrology | Kit on 2026-03-13 | |
| Section 106 | planning | Payments agreed under section 106 must be applied | |
| sessile | dendrology | fixed in one place, permanently attached to someth | |
| stool | dendrology | the stump of a coppiced tree | |
| tree | dendrology | ||
| Tree Preservation Order | planning | A Tree Preservation Order is an order made by a lo | |
| veteran | dendrology | ||
| xylem | dendrology | the vessels that conduct water up and down a stem. |