(Internet) A visual depiction of a set of tags, typically used to describe the content of web sites and having the more significant tags shown in correspondingly larger text or a bolder font.

polar stratospheric cloud

plural of clouded leopard

(physics) A mathematically defined region around an atomic nucleus defined by a high probability that the atom's electrons will be present in that region.

A subgrouping of standard cloud classification system, coming after the major cloud genera

(meteorology) Grouping of the standard cloud classification system. Members include cirrus, cirrocumulus, cirrostratus, altocumulus, altostratus, nimbostratus, stratocumulus, stratus, cumulus, and cumulonimbus.

(meteorology) A small cloud formation which is found attached to, or close by, a major cloud of one of the cloud genera, which is responsible for its development and continuance.

(meteorology) a small, triangular cloud, extending downwind from the peak of a mountain as if a flag, or banner.

plural of cloud genus

(meteorology) A low, horizontal cloud typically forming at the leading edge of thunderstorm outflow. An arcus type cloud often found along squall lines.