This is a glossary of words you'll read and hear about semiconductors. Most of the words appear in this book, but many do not. They're included because you might come across them in other materials or in discussions with other people.
Abbreviation for micron or micro. In the first sense, a micron is one-millionth of a meter, or about 1/25-thousandth of an inch. As the prefix micro-, it means one one-millionth of something. Finally, this is a letter in the Greek alphabet, pronounced “moo.”
Abbreviation for angstrom, a unit of measure.
A unit of measure that's one-tenth of a nanometer, or about 1/250-millionth of an inch. A single atom is 3 to 10 angstroms across, depending on what material it is an atom of.