whereat

[adv] - in consequence of which 2. [adv] - at or toward which
Found on http://www.webdictionary.co.uk/definition.php?query=whereat

Whereat

Where·at' adverb 1. At which; upon which; whereupon; -- used relatively. « They vote; whereat his speech he thus renews.» Milton. « Whereat he was no less angry and ashamed than desirous to obey Zelmane.» Sir P. Sidney. 2. At...
Found on http://www.encyclo.co.uk/webster/W/29

Whereat

• (adv.) At what; -- used interrogatively; as, whereat are you offended? • (adv.) At which; upon which; whereupon; -- used relatively.
Found on http://thinkexist.com/dictionary/meaning/whereat/
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