Wiktionary
n. black ice
Wikipedia
Clear ice refers to a solid precipitation which forms when air temperature is between 0 °C (32 °F) and -3 °C (27 °F) and there are supercooled, relatively large drops of water (from freezing fog). A rapid accretion and a slow dissipation of latent heat of fusion favor the formation of a transparent ice coating, without air or other impurities.
A similar phenomenon occurs when freezing rain or drizzle hit a surface and is called glaze.
Clear ice, when formed on the ground, is often called black ice, and can be extremely hazardous.
Clear ice is denser and more homogeneous than hard rime; like rime, however, clear ice accumulates on branches and overhead lines, where it is particularly dangerous due to its relative high density.
Usage examples of "clear ice".
Their arms ended in blades of the same cold, clear ice as their bodies.
They were racing down a broad avenue of clear ice cut by the stavanzer.
The captives were now encased up to the shoulders in a jacket of diamond-clear ice.
Hundreds of meters of broken, tortured rock fell in undisciplined cataracts onto the clear ice.
Internal structure was visible within the clear ice as layers of tubes and compartments.
Kotuko went out, day after day, with a light hunting-sleigh and six or seven of the strongest dogs, looking till his eyes ached for some patch of clear ice where a seal might perhaps have scratched a breathing-hole.
The voice of the young woman, captured in all her beauty like a moment of time frozen within a block of clear ice, repeated: Soon, darlingand then forever.