micron
noun /ˈmaɪkrɒn/
/ˈmaɪkrɑːn/
- micrometre (= a unit for measuring length, equal to one millionth of a metre) The term micron is still in common use, but micrometre is now preferred in scientific contexts.Word Originlate 19th cent.: from Greek mikron, neuter of mikros ‘small’.