A cutaneous hypersensitivity caused by direct contact with an antigen.
APAPRead more in this article about some frequently asked questions and fun facts related to our definitions.
Why Did Twitter Change Their Character Limit To 280 Characters?We all know by now that Twitter raised their character limit to 280. Predictably, this change has inspired hilarious reactions online. Most users are downright gleeful they have a wee-bit more space to tweet. Others are upset, claiming this expansion will ruin Twitter by making it more like Facebook. A few grumpy tweeters have solemnly vowed to never compose a tweet that’s longer than the …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.