- Of, pertaining to, or designating, a subdivision of the
Trenton Period of the Lower Silurian, characterized in the State of New
York by beds of shale.
Aeronautical station Aeronautical station is a surface station in the aeronautical mobile service, carrying on a service with aircraft stations.
Aeronautical plotting chart Aeronautical plotting chart is an aeronautical chart designed primarily for the graphical processes of air navigation.
Aeronautical designation Aeronautical designation means a designation authorizing an Army officer to pilot Army aircraft when ordered to do so by competent authority.
Aeronautical broadcast station Aeronautical broadcast station refers to an aeronautical station which makes broadcasts of meteorological information and notices to airmen.
End of evening nautical twilight End of evening nautical twilight refers to the point in time when the sun has dropped 12 degrees below the western horizon, and is the instant of last available ...
Begin morning nautical twilight Begin morning nautical twilight is the start of that period where, in good conditions and in the absence of other illumination, the sun is 12 degrees below the eastern horizon ...
Aeronautical chart Aeronautical chart refers to a specialized representation of mapped features of the Earth, or some part of it that produced to show selected terrain, cultural...
Definition
[ a.]