activity
Use Activity in a sentence
ɪ noun, plural ac·tiv·i·ties.
1.
the state or quality of being active: There was not much activity in the stock market today. He doesn't have enough physical activity in his life.
2.
a specific deed, action, function, or sphere of action: social activities.
3.
work, especially in elementary grades at school, that involves direct experience by the student rather than textbook study.
4.
energetic activity; animation; liveliness.
6.
normal mental or bodily power, function, or process.
7.
Physical Chemistry. the capacity of a substance to react, corrected for the loss of reactivity due to the interaction of its constituents.
8.
Physics.
a.
the number of atoms of a radioactive substance that disintegrate per unit of time, usually expressed in curies.
9.
an organizational unit or the function it performs.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Link To Activity
00:10
Activity
is always a great word to know.
So is callithumpian. Does it mean:
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
Collins
World English Dictionary
activity (ækˈtɪvɪtɪ) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —n , pl -ties | |
| 1. | the state or quality of being active |
| 2. | lively action or movement |
| 3. | any specific deed, action, pursuit, etc: recreational activities |
| 4. | the number of disintegrations of a radioactive substance in a given unit of time, usually expressed in curies or disintegrations per second |
| 5. | a. the capacity of a substance to undergo chemical change |
| b. the effective concentration of a substance in a chemical system. The absolute activity of a substance B, λB, is defined as exp (μBRT) where μB is the chemical potential | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
activity
1540s, "state of being active," from Fr. activité, from M.L. activitatem (nom. activitas), a word in Scholastic philosophy, from L. activus (see active). Meaning "state of being active, briskness, liveliness" recorded from 1520s. Activities in schoolwork sense is from 1923, Amer. Eng.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
activity ac·tiv·i·ty (āk-tĭv'ĭ-tē)
n.
A physiological process.
The presence of neurogenic electrical energy in electroencephalography..
An ideal concentration for which the law of mass action will apply perfectly.
The intensity of a radioactive source.
The ability to take part in a chemical reaction.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Based on their answers, they were put into five groups of varying activity levels from inactive to highly active.
They also pointed out that it's unlikely heat from the active phones was to blame for the changes in brain activity.
The epithelium of the mamma differs according to the state of activity of the organ.
For the new study, researchers created special mice whose telomerase activity could be switched on and off.
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