1. Of or relating to the bore of a gun (or its ammunition) that measures forty-five hundredths of an inch in diameter
   - .45 caliber [US], .45 calibre [Brit, Cdn], .45-calibre [Brit, Cdn]

See also: caliber [US]

• Seeland
• seem
• seeming
• seemingly
• seemless
• seemliness
• seemly
• seep
• seepage
• seeping
• seer
• seeress
• seersucker
• seesaw
• seethe
• seether
• seething
• Segal
• segment
• segmental
• segmental arch
• segmentation
• segmentation cavity
• segmented
• segmented worm