sir
- (initialism) . (manufacturing) surface insulation resistance.
- Noun. (British) The titular prefix given to a knight or baronet.
- Noun. A man of a higher rank or position.
- Noun. An address to a military superior of either sex.
- Noun. An address to any male, especially if his name or proper address is unknown.
- Verb. to address somebody using sir.
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This entry was last updated on RefTopia from its source on 3/20/2012.