noun, plural ac·tiv·i·ties.
- the number of atoms of a radioactive substance that disintegrate per unit of time, usually expressed in curies.
Related formsnon·ac·tiv·i·ty, noun, plural non·ac·tiv·i·ties.pre·ac·tiv·i·ty, noun, plural pre·ac·tiv·i·ties.su·per·ac·tiv·i·ty, noun, plural su·per·ac·tiv·i·ties.
Examples from the Web for activity
For me, I just like the activity, and the activity just happens to make money.The Gospel According to Nick Denton—What Next For The Gawker Founder?|Lloyd Grove|December 14, 2014|DAILY BEAST
Power generation and production is not the sort of activity one usually associates with skiing.
If a person looks like they are alive, but their brain shows no signs of activity, is this person dead or alive?
It is also overwhelmingly pro-regime, and since the start of Syrian unrest the region has become a hotbed of pro-Assad activity.
The play of Sunday, the play of being angels in the choir, is not just a peripheral secondary marginal realm of activity.
Thus one aims at, say, a rabbit; what he wants is to shoot straight: a certain kind of activity.Democracy and Education|John Dewey
Joshua's activity during the last years of his life forms an important part of the history of his times.History of the Jews, Vol. II (of 6)|Heinrich Graetz
But his activity at this period was directed to a different aim than that of the former one.Mystics and Saints of Islam|Claud Field
It is to ascertain the meaning of present activities and to secure, so far as possible, a present activity with a unified meaning.Human Nature and Conduct|John Dewey
Its activity was quite marvellous, and it was very playful and elegant in its motions.Natural History of the Mammalia of India and Ceylon|Robert A. Sterndale
British Dictionary definitions for activity
noun plural -ties
- the capacity of a substance to undergo chemical change
- the effective concentration of a substance in a chemical system. The absolute activity of a substance B, λ B, is defined as exp (μ B RT) where μ B is the chemical potential