PDA Technical Glossary
PDA Technical Reports are highly valued membership benefits because they offer expert guidance and opinions on important scientific and regulatory topics and are used as essential references by industry and regulatory authorities around the world. These reports include terms which explain the material and enhance the reader’s understanding.
The database presented here includes the glossary terms from all current technical reports. The database is searchable by keyword, topic, or by technical report. Each definition provided includes a link to the source technical report within the PDA Technical Report Portal.
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Manufacturing
The production, packing, testing, storage, release and distribution of drugs or medical devices for use in humans or animals where the manufacturing is indented to produce doses, typically in significant numbers, for an undefined population of future patients or clinical trial subjects. (TR63)
All operations including purchasing and receipt of materials to production, packaging, labelling, quality control, release, storage, distribution of components and the related controls. (TR 76)
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Meaningful Disruption
A meaningful disruption is a change in production that is reasonably likely to lead to a reduction in the supply of a drug by a manufacturer that is more than negligible and affects the ability of the manufacturer to fill orders or meet expected demand for its product. A meaningful disruption is not an interruption in manufacturing due to matters such as routine maintenance and does not include insignificant changes in manufacturing so long as the manufacturer expects to resume operations in a short period of time. (TR68)
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Medically Necessary Drug
Any drug product used to diagnose, treat, or prevent a serious disease or medical condition for which no other drug is judged to be an appropriate substitute or there is an inadequate supply of an acceptable alternative as determined by the relevant health authority. (TR68)
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Medicinal Product
Any product intended for the diagnosis, treatment, or prevention of disease. (TR39)
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Microprocessor
One of the five major components of a TCU, the unit interfaces with temperature sensors in the discharge and return air and adjusts the output rate of active cooling or heating to achieve the setpoint temperature. (TR64)
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Moisture Content of Wood
The moisture content of wood is calculated by the following formula: Moisture content = (Mg-Mod)/Mod. Where Mg is the green mass of the wood and Mod is its oven-dry mass (the attainment of constant mass generally after drying in an oven set at 103 ± 2 °C for 24h). The equation can also be expressed as a fraction of the mass of the water and the mass of the oven-dry wood rather than a percentage. For example, 0.59 kg/kg (oven-dry basis) expresses the same moisture content as 59% (oven-dry basis). (TR55)