J. Michael Shirley, Ph.D. is a writer, actor, and educator working in the field of Arts-based teaching and learning. ... Found on http://en.wikipedia.org/wiki/Noctilucent
noctilucent 1. A reference to bioluminescent organisms that emit light during darkness. 2. Shining by night; as with a noctilucent cloud, a cloud of a kind that occasionally is seen at night in the summer in high latitudes, which occurs in the mesopause (atmosphere) and which some authorities believe is composed purely of cosmic dust and others of ... Found on http://www.wordinfo.info/words/index/info/view_unit/1402/