Pressure that is less than ambient temperature.
Negative Or Positive Reinforcement: Which Is Better?Whether positive reinforcement or negative reinforcement is better all depends on the situation and the personality of the receiving person.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for negative pressure
See under pressure.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.