Oxen is the plural form .
Also... maybe you're thinking of the expression "a yoke of oxen"?
A pair of oxen is called a yoke.
16 oxen are in a span
Ox is the singular of oxen. One Ox, two or more oxen.
A yoke is a bar or frame of wood by which two oxen are joined at the heads or necks for working together. Therefore, there are TWO (2) oxen in a yoke.
Oxen.
He hopped in the oxen cart and began on his journey. The two oxen struggled to pull the plough through the muddy field.
There is two.
At least two.
The number of oxen pulling a Roman cart typically varied based on the size and load of the cart. Generally, a single yoke of oxen, which consists of two oxen, was commonly used for lighter loads. For heavier loads, additional pairs could be employed. Therefore, it could range from two to four or more oxen depending on the cart's requirements.
The two oxen's water needed replenishing.
A yoke of oxen. Yoke: A crossbar with two U-shaped pieces that encircle the necks of a pair of oxen or other draft animals working together.
A pair of oxen is called a team of oxen or a yoke or oxen.