In Horse Racing, an exacta is a wager placed by a better on the outcome of a race. The better must pick the EXACT order (hence the name "exacta") of the first and second place two horses in that race. A better can "box" the bet, which allows the bettor's picks to finish in any order.
This exacta bet is similar to a quinella. However, with a quinella bet, the bettor does not need to correctly guess the order of the two horses.
Other Exacta Links
Exacta Corp: www.exactacorp.com
Exacta Aerospace: www.exactaaerospace.com
Exacta Dental: www.exactadental.com
Exacta Land Surveyers: www.exactaland.com
Exacta Website Builders, Indianapolis: www.exactaindy.com
X-Acto Knives: xacto.com/products/cutting-solutions/knives.aspx