âº a rule or standard of good behaviour that, unfairly, some people are expected to follow or achieve but other people are not: The governor is being accused of (having) double standards in being tough on law and order yet allowing his own cabinet members to escape prosecution for fraud.
Based on the research conducted on reactive attachment disorder thus far and on the ideas presented by Zeanah and Fox (2004) regarding temperament, I conclude that RAD is a disorder of attachment that may be affected by a child's temperament.
OPD - It's the Law. OPD is an abbreviation for Overfilling Prevention Device, which is part of new national fire and safety standards designed to make the use of propane even safer. An OPD is a safety feature that prevents small propane cylinders from being overfilled.