Category: D

  • Die-back

    The death of the tips of shoots or branches, sometimes followed by the death of the entire shoot. It can be caused by frost or by disease. The death of the tips of shoots or branches, often progressing downward with time until the whole plant dies—mostly caused by diseases or pests attacking the root system,…

  • Dead-head

    To remove dead flowers, with the twofold aim of tidying up the plant and preventing it wasting energy in unwanted seed.  

  • Distillate

    Liquid product made from concentrating, extracting, and isolating cannabinoids and terpenes via steam or fractionation from the cannabis plant. That which has been derived from the distillation process.  

  • Dispensary

    An establishment that sells cannabis. In states where adult-use cannabis is legal, medical dispensaries generally operate separately from “recreational” dispensaries (the cannabis industry prefers the term adult use). A place where drugs are prepared or mixed and given out according to a doctor’s prescription, e.g. part of a chemist’s shop or a department in a hospital.…

  • Decarboxylation

    The process of heating cannabis to break off THC-A’s and CBD-A’s carboxyl radicals, activating THC and CBD and making cannabis more potent. The removal of a single carbon in the form of C02 from a molecule reactions play an important part in the metabolism of glucose. The reaction in which a carboxyl group is removed.…

  • Dawamesk

    A spread or jam made in North Africa containing hashish, almond paste, pistachios, sugar, spices, and sometimes cantharides.  

  • Datura

    Datura

    Shrubby annual plant with large, trumpet-shaped flowers that contains toxic, narcotic alkaloids sometimes used as hallucinogens, often added to majoun. In botany, a genus of plants, many of which are anticholinergic. A genus of plants, one member of which, Datura stramonium, contains constituents of hyoscyamine and scopolamine, which have anticholinergic properties.  

  • Dioecious plants

    Those plants with male and female flowers on separate individual plants (only male flowers on some, only female on others).  

  • Digitate leaf

    A palmate leaf, the leaflets of which are narrow and finger-like.  

  • Doppler ultrasonography

    A technique using ultrasound waves to determine blood flow. A test done to diagnose obstructions and other abnormalities of the heart, arteries, and veins. It also serves to monitor patients who have had arterial or venous surgery such as a bypass. The shift in frequency produced when an ultrasound wave is echoed from something in…