An official website of the United States government.

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

NAL Agricultural Thesaurus
U.S. Department of Agriculture
Warning: Attempt to read property "lang" on string in SkosmosClient\Concept->getValueForLang() (line 430 of /app/drupal/agclass/vendor/dcameron/skosmos_client/src/Concept.php).

Concept Breadcrumbs

Fields of Study > physics > space and time > periodicity
Research, Technology, Methods > research > animal research > biological properties and phenomena > biological rhythms > periodicity
Preferred Term:

periodicity

Definition:
The tendency of a phenomenon to recur at regular intervals; in biological systems, the recurrence of certain activities (including hormonal, cellular, neural) may be annual, seasonal, monthly, daily, or more frequently (ultradian).
Concept Schemes:
https://lod.nal.usda.gov/nalt-core
NALT Full
Broader Concept:
space and time, biological rhythms
Narrower Concepts:
Related Concepts:
Entry Terms:
  • cyclicity
  • bioperiodicity
URI:
https://lod.nal.usda.gov/nalt/17466
Download this Concept:
RDF/XMLCreated 2006-01-19, last modified 2017-04-19
Closely Matching Concepts:
Exactly Matching Concepts: