Definition of raster in English:


Line breaks: ras¦ter
Pronunciation: /ˈrastə


  • A rectangular pattern of parallel scanning lines followed by the electron beam on a television screen or computer monitor: [as modifier]: a raster image
    More example sentences
    • For raster scan pattern the correlation of a series of images appears on three different timescales.
    • The tracking routine starts with a fast raster scan of a large area of the sample in which the particle of interest can be observed.
    • Polygonal scanners relay the outbound and return pulse, scanning the scene or target in a raster format.


1930s: from German Raster, literally 'screen', from Latin rastrum 'rake', from ras- 'scraped', from the verb radere.

More definitions of raster

Definition of raster in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day mage
Pronunciation: meɪdʒ
a magician or learned person