Mean Low Water (MLW): A tidal datum. The average of all the low water heights observed over the National Tidal Datum Epoch. For stations with shorter series, comparison of simultaneous observations with a control tide station is made in order to derive the equivalent datum of the National Tidal Datum Epoch.

 

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Mean Low Water (MLW): A tidal datum. The average of all the low water heights observed over the National Tidal Datum Epoch. For stations with shorter series, comparison of simultaneous observations with a control . . . View Full Definition

Passion flower (Passiflora incarnata): Sedative, assists relaxation and sleep.

Peak Flow: The maximum instantaneous discharge of a stream at a specific location. Corresponds to the highest stage of a flood.

Outflow: Also referred to as an outflow boundary, it is the outward flow of air from a system, such as a thunderstorm. It is the result of cold downdrafts and its passage includes a wind shift and te . . . View Full Definition

Orange Flower Water: A light, non-alcoholic preparation based on the oil of orange blossoms, used as a flavoring in drinks.

Perched Groundwater: An isolated body of ground-water that is perched above and separated from the main water table by an aquiclude.

Personal Allowance: Tax allowances are concessions by the Inland Revenue which can be used to reduce a person's Taxable Income. The main allowance for taxpayers is the 'personal allowance'; which is an amount o . . . View Full Definition

Plow Back: To reinvest earnings in a business rather than pay out them out as dividends. Common practice in high-growth companies.

Plow (Halasana): An inverted pose. Lie flat on your back. Bend knees up onto your chest and raise your buttocks off the floor. Next bring your knees towards your forehead while keeping your legs straight.

Plough, Plow: To cut a lengthwise groove in a board or plank. An exterior handrail normally has a ploughed groove for hand gripping purposes