| Term: | Crack |
| Definition: | Sea ice terminology that describes any fracture of fast ice, consolidated ice or a single floe which may have been followed by separation ranging from a few centimetres to 1 metre. |
| Term: | Crack |
| Definition: | A separation formed in an ice cover of floe that does not divide it into two or more pieces. |
| Term: | Crack |
| Definition: | Any fracture or rift in floating ice not sufficiently wide to be described as a lead. |
| Term: | Crack |
| Definition: | Any fracture of fast ice, consolidated ice or a single floe with a width ranging from a few centimeters to 50 m and a length from several tens or hundreds of meters to several hundreds of kilometers. |
| Term: | Crack |
| Definition: | A fracture in an ice floe that has not parted substantially. More specifically, it is any fracture of fast ice, consolidated ice, or a single floe that may have been followed by separation ranging from a few centimeters to 1 m. |