There·at' adverb 1.
At that place; there. « Wide is the gate, and broad is the way, that leadeth to destruction, and many there be which go in thereat
.» Matt. vii. 13. 2.
At that occurrence or event; on that account. « Every error is a stain to the...Found on http://www.encyclo.co.uk/webster/T/41
• (adv.) At that place; there. • (adv.) At that occurrence or event; on that account.Found on http://thinkexist.com/dictionary/meaning/thereat/
No exact match found