I
In meteorology, the interface or transition zone between two air masses of different density and temperature.
Frontal zones are frequently accompanied by low barometric pressure, marked changes in wind direction and relative humidity, and considerable cloudiness and precipitation.
II
[c mediumvioletred] (as used in expressions)
Islamic Salvation Front
National Liberation Front
popular front
Stresa Front
wave front
{{link=Popular Front for the Liberation of Saguia el Hamra and R%C3%ADo de Oro">Popular Front for the Liberation of Saguia el Hamra and Río de Oro
Popular Front for the Liberation of Oman
Dhofar Liberation Front