Definition of "addition" []

• The act or process of adding, especially the process of computing with sets of numbers so as to find their sum. (noun)
• Something added, such as a room or section appended to a building. (noun)
• In addition Also; as well. (idiom)
• In addition to Over and above; besides. (idiom)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Here, in addition, is an index to those houses, with special notes of my own to every house."
• "She has been well cautioned, and, in addition, is not the sort of person who would assist a young lady in carrying on a clandestine correspondence."
• "June 25th, 2009 3: 54 pm ET the only thing that will convince Americans to change their addition is their pocket – I love the times when gallon was $5.00 at the pump"