Definition: The word "Glac" is a term used to refer to large bodies of ice. It is often used as an adjective, meaning something that is very large or extensive. For example, in a sentence like "This glacial lake is vast," "glacial" refers to the size and extent of the lake. There are many types of glaciers, each with its own characteristics and features. Some examples include: - Ice caps: These are large bodies of ice that form on the surface of a glacier, such as those at Mount McKinley in Alaska or the Antarctic plateau in Antarctica. - Ice sheets: These are longitudinal bands of ice that rise from the ocean floor and then travel through the earth's crust to reach the high latitudes where they eventually become glaciers. - Glacier cones: These are small ice fields that form on a glacier, and are often visible when looking down into the glacier. They can be large or small, depending on their size and density. - Ice streams: These are long stretches of ice that flow in one direction and never intersect with another. They can be very short and wide, and may be difficult to see from the ground. Overall, "Glac" refers to a vast body of water that is composed of large bodies of ice, often forming on the surface or rising from the ocean floor.