Chemistry

• abundance

  (chemistry) the ratio of the total mass of an element in the earth's crust to the total...

• stoichiometry

  (chemistry) the relation between the quantities of substances that take part in a...

Also contains

• loading

  The ratio of the gross weight of an airplane to some factor determining its lift.

• average

  (sports) the ratio of successful performances to opportunities.

• intelligence quotient

  A measure of a person's intelligence as indicated by an intelligence test...

• efficiency

  The ratio of the output to the input of any system.

• frequency

  The ratio of the number of observations in a statistical category to the total number...

• proportionality

  A ratio of two quantities that is constant.

• quotient

  The ratio of two quantities to be divided.

• load factor

  (aeronautics) the ratio of an external load to the weight of the aircraft (measured...

• eccentricity

  (geometry) a ratio describing the shape of a conic section; the ratio of the distance...

• price-to-earnings ratio

  (stock market) the price of a stock divided by its earnings.

• abundance

  (physics) the ratio of the number of atoms of a specific isotope of an element to the...

• aspect ratio

  The ratio of the width to the height of a tv picture.

• albedo

  The ratio of reflected to incident light.

• cephalic index

  Ratio (in percent) of the maximum breadth to the maximum length of a skull.

• output-to-input ratio

  The output power of a transducer divided by the input power.

• speed

  The ratio of the focal length to the diameter of a (camera) lens system.

• facial index

  The ratio (in percent) of the maximum width to the maximum height of the face.

• hematocrit

  The ratio of the volume occupied by packed red blood cells to the volume of the whole...

• productivity

  (economics) the ratio of the quantity and quality of units produced to the labor per...

• Mach number

  The ratio of the speed of a moving body to the speed of sound.

• margin of profit

  The ratio gross profits divided by net sales.

• loss ratio

  The ratio of the annual claims paid by an insurance company to the premiums received.

• mechanical advantage

  The ratio of the force exerted by a machine to the force applied to it.

• magnification

  The ratio of the size of an image to the size of the object.

• odds

  The ratio by which one better's wager is greater than that of another; "he offered odds of...

• mileage

  The ratio of the number of miles traveled to the number of gallons of gasoline burned.

• magnitude

  A number assigned to the ratio of two quantities; two quantities are of the same order...

• prevalence

  (epidemiology) the ratio (for a given time period) of the number of occurrences of a...

• refractive index

  The ratio of the velocity of light in a vacuum to that in a medium.

• respiratory quotient

  The ratio of the volume of carbon dioxide expired to the volume of oxygen consumed...

• relative humidity

  The ratio of the amount of water in the air at a give temperature to the maximum...

• signal-to-noise ratio

  The ratio of signal intensity to noise intensity.

• safety factor

  The ratio of the breaking stress of a structure to the estimated maximum stress in...

• time constant

  The ratio of the inductance of a circuit in henries to its resistance in ohms.

• turnover

  The ratio of the number of workers that had to be replaced in a given time period to the...