Activity may mean:
- Action (philosophy), in general
- Social activity, in social sciences
- The Aristotelian concept of energeia, Latinized as actus
- Physical exercise
- Activity (UML), a major task in Unified Modeling Language
- Activity diagram, a diagram representing activities in Unified Modeling Language
- Activity, an alternative name for the game charades
- Activity, the rate of catalytic activity, such as enzyme activity (enzyme assay), in physical chemistry and enzymology
- Activity (chemistry), the effective concentration of a solute for the purposes of mass action
- Activity (project management)
- Activity (radioactivity), radioactive decay#Radioactive decay rates, the number of radioactive decays per second
- Activity (software engineering)
- Activity (soil mechanics)
- HMS Activity (D94), an aircraft carrier of the Royal Navy
- in military parlance, a military agency or unit (e.g. Intelligence Support Activity)
- Activity Theory, social constructivism (learning theory), Education
The special spelling Activiti may mean:
- Activiti, an open source Business Process Management (BPM) Platform
Famous quotes containing the word activity:
“Play for young children is not recreation activity,... It is not leisure-time activity nor escape activity.... Play is thinking time for young children. It is language time. Problem-solving time. It is memory time, planning time, investigating time. It is organization-of-ideas time, when the young child uses his mind and body and his social skills and all his powers in response to the stimuli he has met.”
—James L. Hymes, Jr. (20th century)
“The animal is one with its life activity. It does not distinguish the activity from itself. It is its activity. But man makes his life activity itself an object of his will and consciousness. He has a conscious life activity. It is not a determination with which he is completely identified.”
—Karl Marx (1818–1883)
“In communist society, where nobody has one exclusive sphere of activity but each can become accomplished in any branch he wishes, society regulates the general production and thus makes it possible for me to do one thing today and another tomorrow, to hunt in the morning, fish in the afternoon, rear cattle in the evening, criticize after dinner, just as I have a mind, without ever becoming hunter, fisherman, shepherd or critic.”
—Karl Marx (1818–1883)