Related Words

Mean Motion: Average motion or rate of travel within a specified time period.

Mean Time: Time based upon the hour angle of the mean sun as distinguished from apparent time which is based upon the position of the real Sun. The difference between apparent and mean time is known as . . . View Full Definition

Mean Tide Level (MTL): A tidal datum. The arithmetic mean of mean high water and mean low water. Same as half-tide level.

Mean Temperature: The average of temperature readings taken over a specified amount of time. Often the average of the maximum and minimum temperatures.

Mean Sun: A fictitious sun which is assumed to move in the celestial equator at a uniform speed corresponding to the average angular speed of the real Sun in the ecliptic, the mean sun being alternate . . . View Full Definition

Mean Wage: The average wage for a worker in a specified position or occupation, which is determined by adding together the total wages for all incumbents in a specific position or occupation and then d . . . View Full Definition

Mean Water Level (MWL): A datum. The mean surface elevation as determined by averaging the heights of the water at equal intervals of time, usually hourly. Mean water level is used in areas of little or no range in tide.

Mean-Variance Criterion: The selection of portfolios based on the means and variances of their returns. The choice of the higher expected return portfolio for a given level of variance or the lower variance portfoli . . . View Full Definition

Mean-Variance Analysis: Evaluation of risky prospects based on the expected value and variance of possible outcomes.

Mean Water Level Line (MWLL): The line on a chart or map which represents the intersection of the land with the water surface at the elevation of mean water level.