View Full Document. Ice Pellets Ice pellets (also called sleet) are refrozen snowflakes. They occur when a layer of air aloft is warm enough (> 0 ï° C) to melt snowflakes into raindrops but the air near the ground is cold enough to freeze the drops.
acarid - very small free-living arachnid that is parasitic on animals or plants; related to ticks. 1  mite - any of numerous very small to minute arachnids often infesting animals or plants or stored foods. 2  Acaridae, family Acaridae - mites.
In telephony, an automatic call distributor (ACD) or automated call distribution system, is a device or system that distributes incoming calls to a specific group of terminals or agents based on the customer's selection, customer's telephone number, selected incoming line to the system, or time of day the call was processed.