Any animal of the taxonomic family Equidae, including any equine (horse, zebra, ass, mule, etc.)

plural of equid

Occupying a position midway between two ends or sides.

In an equidistant manner or to an equidistant degree

(countable, uncountable) Equal distance.

plural of equidistance

Having (approximately) the same dimensions.

The property of being equidimensional.

An equal distribution.

distributed equally