A spacer is generally something used to create a space between two objects, often to properly position them.

There are also a number of specialised usages for the term.

* Rebar spacers or reinforcement bars spacers are linear or point proucts manufactured of plastic, concrete or more rarely metal, used to provide the correct cover (distance from formwork) for the reinforcement steel bars in concrete constructions.
* Asthma spacers are used to ensure proper delivery of inhaled asthma medication.
* Orthodontic spacer
* Spacers, the first humans to emigrate to space in Isaac Asimov's Robot Series, also used in certain other sci-fi franchises to designate a being who resides primarily aboard ships and stations in space
* in space opera, and science fiction and roleplaying games in general, the word is often used to refer to humans in general or a specific caste of humans who live in outer space, or (by analogy with "sailor") serve as the crew of spaceships.
* molecular spacers on a molecular level
* In the High Guard, the military force of the Systems Commonwealth (from the series "Gene Roddenberry's Andromeda"), a Spacer is a junior enlisted rating in the Argosy (space navy). It is equivalent to a Crewman in "Star Trek"'s Starfleet, or a seaman in the present-day United States Navy.

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  • Spacer — Chanson par Sheila extrait de l’album King of the world Pays  États Unis Sortie …   Wikipédia en Français

  • Spacer — (englisch, wörtlich etwa „Abstandhalter“) bezeichnet: Distanzring, Distanzstück o. ä. Spacer (Biologie), in der Biologie Sequenzen auf der DNA zwischen einzelnen Genen Spacer (Halbleitertechnik), in der Halbleitertechnik erwünschte… …   Deutsch Wikipedia

  • spacer — {{/stl 13}}{{stl 8}}rz. mnż I, D. u, Mc. spacererze {{/stl 8}}{{stl 7}} piesza przechadzka dla przyjemności, dla zdrowia : {{/stl 7}}{{stl 10}}Spacer krótki, długi. Iść na spacer do lasu. {{/stl 10}} …   Langenscheidt Polski wyjaśnień

  • spacer — spacer. См. спейсер. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Spacer — Spacer, in der DNA von Prokaryoten und Eukaryoten vorhandene nichtinformative Abschnitte unterschiedlicher Länge, die die Strukturgene voneinander trennen, für deren Regulation Bedeutung haben und nicht transkribiert werden …   Deutsch wörterbuch der biologie

  • spacer — m IV, D. u, Ms. spacererze; lm M. y «chodzenie, przechadzanie się, przejście się, jeżdżenie dla przyjemności, dla zdrowia itp.; przechadzka, przejażdżka» Daleki, długi, krótki spacer. Pieszy, konny spacer. Spacer autem, dorożką, saniami. Spacer… …   Słownik języka polskiego

  • spacer — [1] A component which moves two items further apart. Sometimes it is just a washer and at others it is a metal or plastic cylinder or a block of rubber or plastic. [2] A band on demountable rims which fits between two rims in dual mounting to… …   Dictionary of automotive terms

  • spacer — spac·er spā sər n a region of chromosomal DNA between genes that is not transcribed into messenger RNA and is of uncertain function * * * spac·er (spāsґər) 1. something that separates or keeps other things apart; see spacer DNA, under… …   Medical dictionary

  • spacer — tarpiklis statusas T sritis chemija apibrėžtis Sandarinimo detalė. atitikmenys: angl. gasket; seal; spacer rus. прокладка; уплотнитель …   Chemijos terminų aiškinamasis žodynas

  • spacer — space ► NOUN 1) unoccupied ground or area. 2) a free or unoccupied area or expanse. 3) the dimensions of height, depth, and width within which all things exist and move. 4) a blank between typed or written words or characters. 5) (also outer… …   English terms dictionary