Acro dance is a style of dance that combines classical dance technique with precision acrobatic elements. It is defined by its athletic character, its unique choreography, which seamlessly blends dance and acrobatics, and its use of acrobatics in a dance context. It is a popular dance style in amateur competitive dance as well as in professional dance theater and in contemporary circus productions such as those by Cirque du Soleil.

This is in contrast to acrobatic, artistic and rhythmic gymnastics, which are sports that employ dance elements in a gymnastics context under the auspices of a governing gymnastics organization (such as FIG) and subject to a Code of Points. Acro dance is known by various other names including acrobatic dance and gymnastic dance, though it is most commonly referred to simply as acro by dancers and dance professionals.

More Info: en.wikipedia.org