A fairly well defined mass of clouds observed at a distance; it covers an appreciable portion of the horizon sky, but does not extend overhead.
Related Terms 
ANALYTICAL FERROGRAPHY
The magnetic precipitation and subsequent analysis of wear debris from a fluid sample .This approach involves passing a volume of fluid over a chemically treated microscope slide which is supported over a magnetic field. Permanent magnets are arranged in such a way as to create a varying field strength over the length of the substrate. This varying strength causes wear debris to precipitate in a distribution with respect to size and mass over the Ferrogram. Once rinsed and fixed to the substrate, this debris deposit serves as an excellent media for optical analysis of the composite wear particulates.

GYROSCOPE
A rapidly rotating mass free to move about one or both axes perpendicular to the axis of rotation and to each other. It is characterized by GYROSCOPIC INERTIA and PRECESSION. Usually shortened to GYRO. The term also refers colloquially to the GYROCOMPASS.

FLOW RATE
The volume, mass, or weight of a fluid passing through any conductor per unit of time.

PHASE FLOW RATE
The amount of one phase of a multiphase flow flowing through the crosssection of a conduit in unit time. The phase flow rate may be specified as phase volume flow rate or as phase mass flow rate.

MULTIPHASE METER
A device for measuring the phase area fractions and flow rates of oil, gas and water of a multiphase flow through a crosssection of a conduit. It is necessary to specify whether the multiphase meter measures volume or mass flow rates.

ICICLE
A hanging mass of ice, usually conical, formed by the freezing of dripping water

MULTIPHASE FLOW RATE
The total amount of the two or three phases of a multiphase flow flowing through the crosssection of a conduit in unit time. The multiphase flow rate should be specified as multiphase volume flow rate or multiphase mass flow rate.

INERTIAL FORCE
A force in a given coordinate system arising from the inertia of a mass moving with respect to another coordinate system.

MOMENT OF INERTIA
The quantity obtained by multiplying the mass of each small part of a body by the square of its distance from an axis, and adding all the results.

PHASE MASS FRACTION
The phase mass flow rate of one of the phases of a multiphase flow, relative to the multiphase mass flow rate.
