Side by side Definition 1 of 3Pro Tip 1/3Physical Proximity Refers to objects or people that are very close with no space in between. The newlyweds' chairs were placed side by side at the head table. Pro Tip 2/3Equal Status Implies people involved hold similar status or roles. The competitors stood side by side, awaiting the final results. Pro Tip 3/3Unity Can symbolize solidarity or support among individuals or groups. Citizens marched side by side demanding justice and equality.