U

millimeter - Abbreviate as "mm" with no space: 35mm film, 105mm Howitzer. mine hunting - Use as two words. minehunter - Use as one word. missiles - Capitalize and italicize the proper name, but not the word missile: Titan II missile. MK - Use "MK" when referring to the word "Mark" in weapons or equipment. (He worked on an MK 50 torpedo.) ................
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