Activity correct spelling

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Definition by Wiktionary (Licensed under Creative Commons Attribution/Share-Alike License)

"The activity of a dissolved species in solution is the ""effective"" concentration of that species. In an ""ideal"" solution, the molecules in the solution do not interact with each other and the concentration and the activity are identical. this is the case for very dilute solutions. In a ""real"" solution, there is a certain interaction between the molecules resulting in a diminished ""activity"" of the molecules toward the outside world, and the solution behaves like it would contain lower concentration of the dissolved species than it actually does. the activity can be expressed as the product of an ""activity coefficient"" and the concentration. "

(a) An effective thermodynamic concentration used in thermodynamic calculations in place of the actual concentration to allow equations developed for ideal solutions to be used to treat real solutions.

In adsorption chromatography, the relative strength of the surface of the packing. for silica gel, the more exposed the silanol groups, the more active the surface. activity can be controlled by adding water or another polar modifier, which is hydrogen bonded to the active sites, thereby reducing the surface activity.

activityc*tiv"i*ty (&?;), n.; pl. activities (&?;). [cf. f. activité, ll. activitas.] the state or quality of being active; nimbleness; agility; vigorous action or operation; energy; active force; as, an increasing variety of human activities. "the activity of toil."   similar words(6) 

 offensive activity  intelligence activity  creative activity  human activity  radio-activity  educational activity 


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

Noun1. any specific activity; "they avoided all recreational activity" (antonym) inactivity (hypernym) act, human action, human activity (hyponym) variation, variance2. the state of being active; "his sphere of activity"; "he is out of action" (synonym) action, activeness (antonym) inaction, inactivity, inactiveness (hypernym) state (hyponym) agency (attribute) active3. an organic process that takes place in the body; "respiratory activity" (synonym) bodily process, body process, bodily function (hypernym) organic process, biological process (hyponym) control4. (chemistry) the capacity of a substance to take part in a chemical reaction; "catalytic activity" (hypernym) capability, capacity (classification) chemistry, chemical science5. a process existing in or produced by nature (rather than by the intent of human beings); "the action of natural forces"; "volcanic activity" (synonym) natural process, natural action, action (hypernym) process (hyponym) radiation6. the trait of being active; moving or acting rapidly and energetically; "the level of activity declines with age" (synonym) activeness (hypernym) trait (hyponym) animation, spiritedness, invigoration, brio, vivification (attribute) active

De = n. activity; a parting, right, right side; the south, v. to part; to

Dienig = a. sad; without activity

Gorad = n. superior activity

Myw = n. what has activity; an ant

Pabledd = a. activity; vigour

Rheuedd = n. activity, agility

1. A unit, organization, or installation performing a function or mission, e.g., reception center, redistribution center, naval station, naval shipyard. 2. A function, mission, action, or collection of actions. also called ACT. see also establishment.  

Activity may mean:action, in generalActivity, an alternative name for the game charadesActivity, a task.Activity, the ability of a piece to influence the game in chessActivity, the rate of a catalytic reaction, such as enzyme activity, in physical chemistry and enzymologyactivity (chemistry), the effective concentration of a solute for the purposes of mass action activity (project management)activity (radioactivity), the number of disintegrations per secondactivity (software engineering)activity (soil mechanics)activity diagram, a diagram representing activities in UMLHMS Activity, an aircraft carrier of the royal Navy

the rate of decay of radioactive material expressed as the number of atoms breaking down per second measured in units called becquerels or curies.  

nounwhat something does; the drug's activity did not last more than a few hoursantibacterial activity = effective action against bacteria

based costing system- a system that tracks costs based on the activities that are responsible for driving costs in the production of manufactured goods


the effective concentration of a chemical based on thermodynamic considerations. activity and concentration have the same units and have the same value in very dilute solutions.

Common misspellings

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Word analysis of activity