mum

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μm

/μm/ micrometer (2).

μm

abbreviation for micrometer.

1 micrometer

(mī′krō-mēt-ĕr) [ micro- + -meter],

μm

One millionth of a meter (10−6); one thousandth of a millimeter (0.001 mm). It was formerly called a micron.

μm

micrometer.
References in periodicals archive ?
The legislator underlined the western countries' double-standards in dealing with the regional uprisings, saying while NATO attacks Libya under the pretext of helping the oppressed people against the autocratic and totalitarian regime of Muammar al-Qaddafi, it has kept mum about Bahrain and the massacre of the innocent civilians who merely request democracy and elections to choose their own leaders.
MIRANSHAH, April 10, 2010 (Balochistan Times): The closure of passport office in Miranshah and staff disappearance for two weeks cause a lot of difficulties for the people but the concerned officials have kept mum over the problem, residents told on Saturday.
The actress, 32, has so far kept mum but she has told producers and event organisers that she is having the summer off to prepare for the birth.
Newhall kept mum about the exact location of his instruments - he only said it's on the west side of Death Valley, somewhere in the salt basin.
ALTHOUGH Gwyneth Paltrow is going to be a mum, I think she should have kept mum.
The 'Blurred Lines' producer had kept mum about the rumor, until Tuesday, where in an interview with Time Out London, he said that he is willing to go on a record saying he does not drink people's blood.
Both Christina Aguilera and Jennifer Lopez kept mum for ages - despite their blossoming baby bumps.
He even kept mum while visiting Falk backstage when the latter was appearing in the play ``Defiled'' at the Geffen Playhouse.
LIZ Hurley kept mum yesterday as speculation mounted that she may be pregnant.