Definition of "per-" []

• Thoroughly; completely; intensely: perfervid. (prefix)
• Containing an element in its highest oxidation state: perchloric acid. (prefix)
• Containing a large or the largest possible proportion of an element: peroxide. (prefix)
• Containing the peroxy group: peracid. (prefix)
• Slang Very: percool, as in "That shirt is percool, man!” (prefix)

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.

• "The per- share results topped the average analyst estimate by 1 cent, or 0.8 percent, the smallest margin since the second quarter of 2008."
• "The average per- share profit estimate of 31 analysts surveyed by Bloomberg was 33 cents."
• "First-quarter per- share earnings will be about $9.30 on sales of about $37 billion, Apple said in the statement."