Related Words

Convective Condensation Level (CCL): The height at which a parcel of air, if heated sufficiently from below, will rise adiabatically until it is just saturated.

Melting Level: The altitude at which ice crystals and snow flakes melt as they descend through the atmosphere.

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.

Mesoscale Convective Complex (MCC): A large mesoscale convective system (MCS) which is about the size of the state of Ohio or Iowa and lasts at least 6 hours. Generally forming during the afternoon and evening, the complex nor . . . View Full Definition

Mesoscale Convective System (MCS): A large organized convective weather system comprised of a number of individual thunderstorms. It normally persists for several hours and may be rounded or linear in shape. This term is ofte . . . View Full Definition

National Water Level Observation Network (NWLON): The network of tide and water level stations operated by the National Ocean Service along the marine and Great Lakes coasts and islands of the United States. The NWLON is composed of the pri . . . View Full Definition

Minimal Risk Level (MRL): An ATSDR estimate of daily human exposure to a hazardous substance at or below which that substance is unlikely to pose a measurable risk of harmful (adverse), noncancerous effects. MRLs are . . . View Full Definition

Mezzanine Level: The period in a company's development just before it goes public.

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