micromillimetre /mī-krə-milˈi-mē-tər/

1. One millionth of a millimetre (now nanˈomētre; obsolete)
2. One thousandth of a millimetre (non-standard)

• trenchantly
• trenchard
• trenchards
• trench coat
• trench coats
• trenched
• trencher
• trencher cap
• trencher caps
• trencher-fed
• trencher-friend
• trencher-friends
• trencher-knight
• trencherman
• trenchermen
• trenchers
• trenches
• trench feet
• trench fever
• trench fevers
• trench foot
• trenching
• trench knife
• trench knives
• trench mortar