Definition of Activity

1. Noun. Any specific behavior. "They avoided all recreational activity"

Generic synonyms: Act, Deed, Human Action, Human Activity
Specialized synonyms: Variance, Variation, Space Walk, Domesticity, Operation, Operation, Pattern, Practice, Diversion, Recreation, Bag, Cup Of Tea, Dish, Follow-up, Followup, Game, Play, Turn, Music, Acting, Performing, Playacting, Playing, Animation, Liveliness, Burst, Fit, Work, Deeds, Works, Service, Business, Job, Line, Line Of Work, Occupation, Occupation, Committal To Writing, Writing, Role, Actus Reus, Misconduct, Wrongdoing, Wrongful Conduct, Dissipation, Waste, Wastefulness, Attempt, Effort, Endeavor, Endeavour, Try, Control, Protection, Sensory Activity, Didactics, Education, Educational Activity, Instruction, Pedagogy, Teaching, Grooming, Preparation, Training, Representation, Creation, Creative Activity, Disassembly, Dismantlement, Dismantling, Puncture, Hunt, Hunting, Search, Employment, Exercise, Usage, Use, Utilisation, Utilization, Military Operation, Operation, Measure, Measurement, Measuring, Mensuration, Calibration, Standardisation, Standardization, Organisation, Organization, Grouping, Support, Supporting, Continuance, Continuation, Procedure, Process, Ceremony, Ceremony, Worship, Activating, Activation, Energizing, Concealing, Concealment, Hiding, Emplacement, Locating, Location, Placement, Position, Positioning, Provision, Supply, Supplying, Demand, Pleasure, Delectation, Enjoyment, Lamentation, Mourning, Laughter, Market, Market Place, Marketplace, Politics, Preparation, Readying, Aid, Assist, Assistance, Help, Support, Behavior, Behaviour, Conduct, Doings, Behavior, Behaviour, Leadership, Leading, Precedence, Precedency, Precession, Solo, Buzz, Fun, Hell, Sin, Outlet, Release, Vent, Last, Mystification, Obfuscation, Negotiation, Verbalisation, Verbalization, Disturbance, Perturbation, Timekeeping
Derivative terms: Active, Active
Antonyms: Inactivity

2. Noun. The state of being active. "He is out of action"
Exact synonyms: Action, Activeness
Generic synonyms: State
Specialized synonyms: Agency, Busyness, Hum, Behavior, Behaviour, Eructation, Eruption, Extravasation, Operation, Overdrive, Play, Swing
Attributes: Active
Derivative terms: Act, Act, Active, Active, Active, Active, Active, Active, Active, Active, Active, Active, Active
Antonyms: Inaction, Inactiveness, Inactivity

3. Noun. An organic process that takes place in the body. "Respiratory activity"

4. Noun. (chemistry) the capacity of a substance to take part in a chemical reaction. "Catalytic activity"
Category relationships: Chemical Science, Chemistry
Generic synonyms: Capability, Capacity
Derivative terms: Active

5. Noun. A process existing in or produced by nature (rather than by the intent of human beings). "Volcanic activity"
Exact synonyms: Action, Natural Action, Natural Process
Generic synonyms: Physical Process, Process
Specialized synonyms: Radiation, Absorption, Acidification, Adiabatic Process, Aeration, Antiredeposition, Capture, Capture, Centrifugation, Chemical Action, Chemical Change, Chemical Process, Chromatography, Concretion, Condensation, Convection, Clotting, Coagulation, Curdling, Decay, Demagnetisation, Demagnetization, Desorption, Diffusion, Disintegration, Dissolution, Distillation, Distillment, Drift, Effervescence, Cataphoresis, Dielectrolysis, Electrophoresis, Ionophoresis, Ecesis, Establishment, Extinction, Extraction, Feedback, Filtration, Flocculation, Flow, Formation, Fossilisation, Fossilization, Geologic Process, Geological Process, Curing, Hardening, Set, Solidification, Solidifying, Inactivation, Ion Exchange, Ionisation, Ionization, Leach, Leaching, Magnetic Induction, Magnetisation, Magnetization, Materialisation, Materialization, Nuclear Reaction, Opacification, Oscillation, Oxygenation, Pair Creation, Pair Formation, Pair Production, Phase Change, Phase Transition, Physical Change, State Change, Precession Of The Equinoxes, Release, Saltation, Scattering, Sericulture, Sink, Soak, Soakage, Soaking, Softening, Sorption, Source, Rigidification, Rigidifying, Stiffening, Stimulation, Ecological Succession, Succession, Natural Selection, Selection, Survival, Survival Of The Fittest, Synergism, Synergy, Temperature Change, Transduction, Transpiration, Vitrification
Derivative terms: Active, Active

6. Noun. The trait of being active; moving or acting rapidly and energetically. "The level of activity declines with age"
Exact synonyms: Activeness
Generic synonyms: Trait
Specialized synonyms: Animation, Brio, Invigoration, Spiritedness, Vivification, Dynamism, Oomph, Pizzaz, Pizzazz, Zing
Attributes: Active, Inactive, Active
Derivative terms: Active, Active, Active, Active, Active
Antonyms: Inactiveness

Definition of Activity

1. n. The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities.

Definition of Activity

1. Noun. The state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities. ¹

2. Noun. something done as an action or a movement ¹

3. Noun. something done for pleasure or entertainment, especially one involving movement or an excursion. ¹

4. Noun. Use (of internet, playstation, bank account etc.) ¹

¹ Source:

Definition of Activity

1. brisk action or movement [n -TIES]

Medical Definition of Activity

1. 1. The state of being active, the ability to produce some effect, the extent of some function or action. 2. A thermodynamic quantity that represents the effective concentration of a solute in a nonideal solution, if concentrations are replaced by activities, the equations for equilibrium constants, electrode potentials, osmotic pressure, boiling point elevation, freezing point depression and vapour pressures of volatile solutes are converted from approximations that hold only for dilute solutions to exact equations that hold for all concentrations. The activity is equal to the product of the concentration and the activity coefficient, a dimensionless number measuring deviation from nonideality. Symbol a. The potential or true thermodynamic activity of a substance, as opposed to its molar concentration. 3. The number of nuclear transitions or disintegrations occurring in a given quantity of radioactive material per unit time. The SI unit of activity is s-1. The special name for the unit of activity is becquerel (Bq). The previously used special unit of activity, curie (Ci), is being replaced by the becquerel. 1 Bq = 2.7 x E-11 Ci. 1 Ci = 3.7 x E10 Bq. 4. Optical activity. (16 Dec 1997)

Lexicographical Neighbors of Activity

activist judge
activist judges
activist justice
activist justices
activities of daily living
activities of daily living scale
activity (current term)
activity coefficient
activity cycles
activity trap
activity traps

Literary usage of Activity

Below you will find example usage of this term as found in modern and/or classical literature:

1. Democracy in America by Alexis de Tocqueville, Henry Reeve (1875)
"More difficult to conceive the political activity which pervades the United States than the freedom and equality which reign there—The great activity which ..."

2. Science by American Association for the Advancement of Science (1910)
"SCIENCE FRIDAY, MAY 20, 1910 CONTENTS The Group as a Stimulus to Mental activity: PROFESSOR WILLIAM H. BURNHAM The Principle of Relativity: DR. ..."

3. Journal of the American Chemical Society by American Chemical Society (1910)
"The marked influence of the acidity of the medium on the activity of the ... activity is a maximum. In preliminary experiments it was noticed that the ..."

4. Encyclopaedia Britannica, a Dictionary of Arts, Sciences, Literature and edited by Hugh Chisholm (1910)
"According to him, the good is activity oí soul in accordance with virtue in a ... Happiness is activity of soul according to virtue in a mature life: it ..."

5. Proceedings of the Royal Society of London by Royal Society (Great Britain) (1907)
"The Effect of Temperature on the activity of Radium and its ... A large number of investigators have attempted to alter the activity of various radio-active ..."

6. Educational Psychology by Edward L[ee] Thorndike (1914)
"The same desirable result-— for example, a given poem or answer to a problem—may come from activity against resistance, from activity along a line of no ..."

7. The American Journal of Psychology by Granville Stanley Hall, Edward Bradford Titchener (1922)
"Inner activity is activity of apprehension, activity of imagination, ... Outer activity is bodily activity. VI. Conation and activity may be either active ..."

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