Meteorology. the horizontal transport of atmospheric properties (distinguished from ).
the horizontal flow of air, water, etc.
the transference of heat energy in a horizontal stream of gas, esp of air
The transfer of a property of the atmosphere, such as heat, cold, or humidity, by the horizontal movement of an air mass.
The rate of change of an atmospheric property caused by the horizontal movement of air.
The horizontal movement of water, as in an ocean current.
- Advection fog
fog caused by the movement of warm, moist air over a cold surface.
a coming into place, view, or being; arrival: the advent of the holiday season. (usually initial capital letter) the coming of Christ into the world. (initial capital letter) the period beginning four Sundays before Christmas, observed in commemoration of the coming of Christ into the world. (usually initial capital letter) . the coming of Christ […]
- Advent calendar
noun (Brit) a large card with a brightly coloured sometimes tinselled design on it that contains small numbered doors for children to open on each of the days of Advent, revealing pictures beneath them Contemporary Examples I dropped the Obama advent calendar I had been examining and rushed gleefully toward the three clerks behind the […]
- Advent sunday
the first Sunday in Advent. noun the first of the four Sundays of Advent, and the one that falls nearest to November 30