micro-

(redirected from Micro sign)
Also found in: Dictionary, Encyclopedia.

micro-

, micr- (mī'krō),
1. Prefixes denoting smallness.
2. Prefix used in the SI and the metric system to signify submultiples of one-millionth (10-6) of such unit.
3. chemistry prefix to terms denoting procedures that utilize minimal quantities of the substance to be examined; for example, a drop or two in place of 1 or more mL.
4. Combining forms meaning microscopic; opposite of macro-, megalo-.
[G. mikros, small]

micro-, micr-, mikro-

1 prefix meaning "small": microanalysis, microglossia.
2 prefix meaning one "millionth": micrometer.

micro-

prefix Latin for small, as in microscopic.

micro-

, micr-
1. Prefixes denoting smallness.
2. Prefixes (abbrev. mc) used in the SI and metric system to signify one millionth (10-6) of a given unit.
3. chemistry Prefix to terms denoting chemical procedures or analyses that use minimal quantities of substance to be examined; specimen materials and reagents.
4. Combining form meaning microscopic; opposite of macro-,megalo-
[G. mikros, small]

micro-

Combining form denoting very small, abnormally small or pertaining to microscopy.

micro-

prefix denoting small. In the metric system of measurement ‘micro’ means ‘one millionth’ with a symbol, as in μm (1×10-6m). see SI UNITS.

micro-

1. Prefixes denoting smallness.
2. μ It is recommended that, in handwritten material and in computer work, names of units formed with this prefix be written in full, because both human beings and computers may misread the Greek letter μ as the Roman letter m. Alternatively the abbreviation mc may be substituted for μ thus, mcg, mcL, mcm, mcmol instead of μg, μL, μm, μmol. The Roman letter u is not in any circumstances a suitable substitute for μ. Prefix used in the SI and the metric system to signify submultiples of one-millionth (10-6) of such unit.
3. chemistry prefix to terms denoting procedures that utilize minimal quantities of the substance to be examined; e.g., a drop or two in place of 1 or more mL.
4. Combining forms meaning microscopic.
[G. mikros, small]