any specific behavior | the act of checking or adjusting (by comparison with a standard) the accuracy of a measuring instrument |
the trait of being active; moving or acting rapidly and energetically | the imposition of standards or regulations |
an organic process that takes place in the body | the condition in which a standard has been successfully established |
a process existing in or produced by nature (rather than by the intent of human beings) | |
the state of being active | |
(chemistry) the capacity of a substance to take part in a chemical reaction | |