| the oldest and densest ice in a glacier, distinguished by a pale-blue color. |
| Main Entry: | blue ice1 |
| Part of Speech: | n |
| Definition: | the clean compact and vividly blue ice formed in glaciers by the recrystallization of snow |
| Main Entry: | blue ice2 |
| Part of Speech: | n |
| Definition: | coarsely crystallized ice on the surface of some lakes and seas |