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Modified American Plan ( Map): A meal plan that includes two or more daily meals, usually breakfast and dinner.

P.L. 480 (Or Public Law 480): P.L. 83-480 (July 10, 1954), also called Food for Peace, is the common name for food aid programs established by the Agricultural Trade Development and Assistance Act of 1954, which seeks to . . . View Full Definition

P1-Derived Artificial Chromosome (PAC): One type of vector used to clone dna fragments (100- to 300-kb insert size: average, 150 kb) in escherichia coli cells. Based on bacteriophage (a virus) p1 genome.

Palladium (Pd): Atomic number: 46, Atomic mass: 106.42 g.mol -1, Electronegativity: 2.2, Density: 11.9 g.cm-3 at 20°C, Melting point: 1560 °C, Boiling point: 2927 °C, Isotopes: 9, Vanderwaals radius: 0.065 . . . View Full Definition

Ozone (O3): A nearly colorless gas and a form of oxygen (O2). It is composed of an oxygen molecule made up of three oxygen atoms instead of two.

Paid Time Off (PTO): A benefit program granting employees a specific number of vacation or personal days off which that are paid by the employer. The number of days is generally based on the employer’s policy fo . . . View Full Definition

Oxygen Technique (Primary Productivity): The estimation of primary productivity by the measurement of the rate of oxygen increase

Owners Equity (Net Assets): The ownership interest in the assets of an entity: equal total assets minus total liabilities.

Oxygen (O): Atomic number: 8, Atomic mass: 15.999 g.mol -1, Electronegativity: 3.5, Density: 1.429 kg/m3 at 20°C, Melting point: -219 °C, Boiling point: -183 °C, Vanderwaals radius: 0.074 nm, Ionic radi . . . View Full Definition

Oxygen (O2): A colorless, tasteless, odorless gas that is the second most abundant constituent of dry air, comprising 20.946%.