Definition of "titer" [titer]

• Concentration of a substance in solution or the strength of such a substance determined by titration. (noun)
• The minimum volume needed to cause a particular result in titration. (noun)

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.

• "WHen you say your titer is 14X the immunized level how many vacciniations have u had? and where do u htink i stand based on the vaccines ive gotten?"
• "My rabies titer is 14x stronger than what is considered "immune" and even still, I pay for the occasional booster."
• "The diesel hydroxide titer, which is the last plan to be completed is mechanically completed and the commissioning is coming up to an end."