a more intense El Nino that occurs every few years when the welling up of cold nutrient-rich water does not occur; kills plankton and fish and affects weather patterns
(physics) a regular periodic variation in value about a mean
the process of oscillating between states
a single complete execution of a periodically repeated phenomenon
in or characteristic of a region of the United States south of (approximately) the Mason-Dixon line
situated in or coming from regions of the south
a railway that is powered by electricity and that runs on a track that is raised above the street level
angular distance above the horizon (especially of a celestial object)
