Here will explain you how you an achieve it just by adding few lines of code and making use of Short Code on product page by using Editor.

In the below screen you can see Short Description Section:

How to add the code in function.php file ?

Now, what you have to do is open function.php file of your current theme add the below code:

/**
*
* Get Product Short Description by PurchaseTheme
*/
function dispaly_product_short_description( $atts ){ 

$atts = shortcode_atts( array('id' => get_the_id()), $atts, 'product_description' );

global $product;

if ( ! is_a($product, 'WC_Product') )
   $product = wc_get_product($atts['id']);

return $product->get_short_description();
}
add_shortcode( 'product_short_description', 'dispaly_product_short_description' );

Now, showing the screenshot of removing Excerpt and adding the short code:

The post How to Add Short Description in Woocommerce in place of Excerpt on product page ? first appeared on PurchaseTheme.