Canister

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The term canister (sometimes mis-spelled cannister) comes from Latin (canistrum = basket) or Greek (kanastron = wicker basket). It means:

• Originally, from kanna reedcan, a basket of woven reeds
• Now commonly, any container that is roughly cylindrical in shape.
• The abbreviated form "can" refers more specifically to a metal canister.
• A packaging as 35mm film container for use in cameras
• Pods used for parachute supply drops
• Gas containers used for riot control and on the contrary :
• A perforated metal box for gas masks, for example :
• The carbon dioxide scrubber of a rebreather
• The filter which absorbs gasoline vapour in a car tank
• A cylindrical bell worn by sheep, that was traditionally used in Sussex, England, especially on the South Downs.
• Canister shot or case-shot, which were types of artillery rounds used in warfare as anti-personnel ammunition