MPIWG MPDL language technology service (see: http://thrax.mpiwg-berlin.mpg.de/mpiwg-mpdl-cms-web), Max Planck Institute for the History of Science, Berlin.aaengformxml[allCompact]allnormdictionary3aleoENenLEO: German - English Dictionary
a
lingueeENenLinguee: German - English Dictionary
a
websterenWebster's revised unabridged dictionary (1913)
a
ahttp://en.wikipedia.org/wiki/ahttp://en.wikipedia.org/wiki/index.php?search=a