Knowledge center. Chickenpox (Chicken Pox) , also known as Varicella, is a very contagious infection caused by the varicella zoster virus. In several parts of the world it is just known as varicella.
mold noun (SHAPE) âº [ C ] a hollow container into which you pour a soft or liquid substance so that it will cool or harden into the shape of the container: The pieces are made in a mold and I just paint them.
Noun [edit]. mold fossil (plural mold fossils). 1  A fossil formed when an animal, plant, or other organism dies and is covered by sediment, its flesh decays and bones deteriorate due to chemical reactions, and a cavity remains below the ground surface.