[magazine] EDN (ISSN 0012-7515) is an electronics website and formerly a magazine owned by UBM Tech, a division of UBM LLC. The current editor-in-chief and brand director is Patrick Mannion with the editorial offices of the magazine in San Francisco, California and Manhasset, New York, USA. EDN magazine was published monthly, in April 2013 ... Found on http://en.wikipedia.org/wiki/EDN_(magazine)
<pharmacology> This is the commonly used abbreviation for the dose of a toxicant causing a defined effect on n% of a test population, for instance, the ED50 would affect 50% of the population. ... (13 Nov 1997) ... Found on http://www.encyclo.co.uk/local/20973