micrometer

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mi·crom·e·ter (mcm),

(mī-krom'ĕ-tĕr), It is recommended that, in handwritten material and in computer work, this word be written in full, because both human beings and computers may misread the abbreviation μm as mm. Alternatively the abbreviation mcm may be used.
1. One millionth of a meter; formerly called micron.
2. A device for measuring various types of objects in an accurate and precise manner.
3. medicine, biology usually used with reference to a glass slide or lens that is marked for measuring microscopic forms accurately.
[micro- + G. metron, measure]

mi·cro·me·ter

(mcm) (mīkrō-mētĕr, mī-kromĕ-tĕr)
1. One millionth of a meter; formerly called micron.
2. A device for measuring various objects in an accurate and precise manner. In medicine and biology, the term is usually used with reference to a glass slide or lens that is accurately marked for measuring microscopic forms.
Synonym(s): micrometre.
[micro- + G. metron, measure]

mi·cro·me·ter

(mcm) (mīkrō-mētĕr, mī-kromĕ-tĕr)
1. One millionth of a meter; formerly called a micron.
2. A device for measuring various objects in an accurate and precise manner.
3. In medicine and biology, the term is usually used with reference to a glass slide or lens that is accurately marked for measuring microscopic forms.
Synonym(s): micrometre.
[micro- + G. metron, measure]