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:
“History does nothing; it does not possess immense riches, it does not fight battles. It is men, real, living, who do all this.... It is not “history” which uses men as a means of achieving—as if it were an individual person—its own ends. History is nothing but the activity of men in pursuit of their ends.”
—Karl Marx (1818–1883)
“It would be one of the greatest triumphs of humanity, one of the most tangible liberations from the constraints of nature to which mankind is subject, if we could succeed in raising the responsible act of procreating children to the level of a deliberate and intentional activity and in freeing it from its entanglement with the necessary satisfaction of a natural need.”
—Sigmund Freud (1856–1939)
“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)