What does spacer mean?
A spacer is anything placed between other people or things to create, preserve, or fill a gap. It may be a small mechanical component, such as a metal or plastic piece that keeps two surfaces apart, or it may refer more broadly to a person, object, or interval that separates others. The word can also be used as a verb: to space two components is to insert a gap or fitted piece between them. Spacers are especially common in construction, engineering, electronics, furniture assembly, and vehicle maintenance, where precise distances and stable alignment are important. In less technical contexts, a person may informally be called a spacer when they stand between others or make room in a queue. The term is practical and usually neutral, though “human spacer” can suggest that someone is uncomfortably caught between two people.
An object placed between other objects to separate them, maintain a distance, fill a gap, or provide support.
"The kit included a plastic spacer for mounting the bracket."
Often used for a small, precisely fitted component in mechanical or construction contexts.
A person, object, or interval that separates other people or things.
"A narrow strip of lawn served as a natural spacer between the houses."
The informal sense of a person who stands between others is especially common in British and American speech.
To place a gap, space, or intermediate piece between two or more things.
"The technician spacered the shelves to allow room for expansion."
Less common than the noun and chiefly used in technical or descriptive contexts.
The plural is used when referring to multiple individual pieces, devices, or people serving to separate other things.
"Fit two spacers between each pair of brackets."
A spacer does more than fill a gap: it gives that gap its intended shape.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does spacer come from?
The word was formed in English by adding the suffix “-er” to “space,” producing an agent or instrument noun: something that occupies or maintains a space. “Space” entered English from Old French “espace,” ultimately derived from Latin “spatium,” meaning an interval or distance. The same Latin root also produced “spatial,” “spacious,” and “cosmic,” all of which concern space, extent, or dimension.
How spacer is actually used
The noun is common in technical, mechanical, and everyday contexts. In British and American English, it may refer to a small fitted component, a supporting piece, or, more informally, someone who stands or sits between other people.
Easily confused with spacer
A separator generally divides or distinguishes two things, whereas a spacer more specifically occupies, fills, or maintains the gap between them.