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.
Mold is a type of fungus, as are mushrooms and yeast. There are between 100,000 and 400,000 types of fungi (estimates vary), and of these, scientists have identified more than 1,000 types of mold growing inside houses across America.2 Molds are classified into three groups according to human responses: