Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Noun: nacreous cloud  ney-kree-us klawd
  1. A luminous iridescent cloud at a high altitude that may be seen when the sun is a few degrees below the horizon
    - mother-of-pearl cloud

Derived forms: nacreous clouds

Type of: cloud

Encyclopedia: Nacreous cloud