mum

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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.
Medical Dictionary, © 2009 Farlex and Partners
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.
LIZ Hurley kept mum yesterday as speculation mounted that she may be pregnant.
The couple moved in together in Pacific Palisades, California, this summer but have kept mum about their romance.
Both Christina Aguilera and Jennifer Lopez kept mum for ages - despite their blossoming baby bumps.
And he kept mum about his future with Sheryl Kyle - who gave birth to the Rangers star's first child on Sunday while he enjoyed a booze-up.
PREGNANT Elizabeth Hurley flew to America yesterday but kept mum about her relationship with the father of her unborn child, wannabe movie mogul Steve Bing.
While Cockney skipper Dennis Wise bellowed out the National Anthem with pride before the FA Cup final, his continental team-mates kept mum.
The 45-year-old star has kept mum about the seating arrangements, but a representative of the Sydney Theatre Company-where the show was held-confirmed that actor and his wife were a part of the audience.