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Oxygen Minimum Layer: A depth zone, usually below the thermocline, in which dissolved oxygen is minimal

Oxygen Dissociation Curve: A curve showing the percent saturation of a blood pigment, such as hemoglobin, as a function of oxygen concentration of the fluid

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

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

Ozone Layer: An atmospheric layer that contains a high proportion of oxygen that exists as ozone. It acts as a filtering mechanism against incoming ultraviolet radiation. It is located between the tropos . . . View Full Definition

Player: Used in the context of general equities. Customer or trader who is actively involved in a particular stock or the market in general.

Phospholipid Bilayer: In an aqueous environment phospholipids can form a two-layered 'sandwich' with the hydrophobic lipid tails on the inside and the hydrophilic phosphate heads facing outward. These bilayers ar . . . View Full Definition

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: A colorless, odorless and tasteless gas that makes up about 20% of the air we breathe (and at least half the weight of the entire solid crust of the earth) and which combines with most of th . . . View Full Definition

Minimum-Variance Frontier: Graph of the lowest possible portfolio variance that is attainable for a given portfolio expected return.