Lists the meaning and origin of more than 1,700 traditional and contemporary English proverbs.

Describes the meanings, origins, and background of thousands of male and female first names used in the United States, Canada, Great Britain, and Australia

More than two thousand alphabetically arranged entries cover topics in subjects ranging from cell metabolism and nutrition to organic and physical chemistry.

Defines more than 5,000 terms used in the field of environmental science.

Defines more than 2,400 terms and phrases related to computers, programming, data processing, and the Internet.