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.
Anticoagulant Citrate Dextrose Solution, Solution A, U.S.P. (ACD-A) is intended for use as an anticoagulant in the extracorporeal blood processing with Autologous Platelet-Rich Plasma (PRP) Systems in production of PRP.ACD-A is not for direct intravenous infusion. ACD-A is the only anticoagulant product approved by the United States Food & Drug Administration for the use in Autologous PRP Systems for the preparation of Platelet-Rich Plasma (PRP).