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GLOSSARY

BOUNDARY : noun; the dividing line or border between two objects

Ex. The boundary between those two air masses is called the front.
CEILING: noun; the height above the ground of the layer of clouds, or overcast, that covers half or

more than half of the sky There is a low layer of stratus clouds today, the ceiling is only
3,000 feet.
COLD FRONT: noun; the name of the frontal zone that occurs when a cold air mass advances and

replaces a warm air mass

Ex. You better wear a coat tomorrow, there is a cold front passing through here tonight.
CROSS SECTION: noun; a picture drawn to show how an object would look if it were cut in half from

top to bottom

Ex. They made a cross-section drawing of the engine so you can see inside.
DRIZZLE: noun; a type of light rain that consists of very small drops

Ex. I don't think I'll need a raincoat, I don't have to go very far and it's only drizzling.

FRONT : noun; the boundary zone of an advancing air mass
Ex. You can expect the wind to change direction when the front passes;

FRONTAL: adjective form of front

GUSTY: adjective; wind that changes speed frequently and irregularly
Ex. The winds have been gusty all day.

METEOROLOGIST: noun; a person who prepares weather reports and predictions

Ex. My brother is an Air Force meteorologist.
OCCLUDED FRONT: noun; a warm front that has been lifted aloft by a more rapidly moving cold front

Ex. That warm front that passed through here yesterday is an occluded. Front now.

OVERTAKE: verb; to come up from behind and pass a slower moving object going in the same

direction
Ex. Since cold fronts usually move faster than warm fronts, frequently cold front will

Overtake warm front that is moving in the same direction.

PASSAGE : noun form of to pass
Ex. The weather will usually change with the passage of a cold front.

SATURATED: adjective; full of water (very high humidity)

Ex. I think the air is almost saturated; it takes the wet clothes a long time to dry, and water on
the floor evaporates very slowly.