plural of active galaxy

plural of activation energy

plural of beehive of activity

(psychology) Aimless, often self-comforting behavior displayed when in doubt, blocked or frustrated. / (more broadly) Something done needlessly when procrastinating.

A condition where a health care consumer is equipped, educated, and motivated to be an effective manager of their own health and use of health care services.

plural of activity stream

(Internet) A list of recent activities performed by an individual, typically on a particular website.

plural of activated sludge

A form of euthanasia wherein death is intentionally brought about, usually by medical intervention to end the euthanasee's suffering.

Essential components of a device, reaction, etc. / A radioactive material