Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
aeroshell
aerosol
aerosol bomb
aerosolise
aerosolize
aerospace
aerostat
aerostatics
aerothermodynamics
aerotropism
Aertex
aery (1)
aery (2)
Aesculapian
aesculapian snake
aesthesia
aesthete
Click to move down the list of words
Also available:

World English Dictionary
Dictionnaire Français

aeronomy

aer·on·o·my [ er ónnəmee ]


noun 
Definition:
 
study of Earth's upper atmosphere: the study of the upper atmosphere of the Earth above 50 km (31 mi), including its reaction with cosmic and ionizing radiation


aer·on·o·mer noun
ae·ro·nom·ic [ èrrə nómmik ] adjective
ae·ro·nom·i·cal adjective
aer·on·o·mist [ e rónnəmist ] noun
Advertisement

© 2009 Microsoft