Full American Lifeguard AssociationÂ® Profile. The American Lifeguard Association (ALA) has been offering training for over 25 years. It is a national educational association that has the full support of both the Swimming Pool and Spa Association and Global Lifeguards, a nonprofit 501(c)(3) organization.
Retroactively definition, operative with respect to past occurrences, as a statute; retrospective: a retroactive law. See more.
The definition of bioactive is something that can have an effect on living tissue. An example of bioactive is are rays from the sun burning skin. having a capacity to interact with a living tissue or system. adjective. Of or relating to a substance that has an effect on living tissue.