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.
Definition - What does Automatic Call Distributor (ACD) mean? An automatic call distributor (ACD) in telephony is a system that distributes incoming calls to a specific group of terminals used by agents. It is a part of a computer telephony integration (CTI) system. ACDs recognize, answer and route incoming calls.