Noun
A lineal measure in the metric system, containing the thousandth part of a meter; equal to .03937 of an inch. See 3d Meter.
Source: Webster's dictionaryAerosol particles are much smaller (as small as a thousandth of a millimetre) and can stay suspended in the air, potentially carrying infectious virus particles with them, and can be breathed in by people. Source: Internet
However, some modern building codes require that the millimetre be used in preference to the centimetre, because "use of centimetres leads to extensive usage of decimal points and confusion". Source: Internet
At home, using his own 8 millimetre film projector, he’d show other kids Buster Keaton comedies, hired from Melbourne. Source: Internet
It is worth mentioning here that to roll out plates with this section; input slabs of 200-210 millimetre thickness with lesser weight are required. Source: Internet
Colonoscopy can remove polyps as small as one millimetre or less. Source: Internet
For example, a measurement of 5.783 millimetres would be obtained by reading 5.5 millimetres on the sleeve, and then adding 0.28 millimetre as determined by the thimble. Source: Internet