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micro-

micro-
1. (μ) From the Greek mikros meaning ‘small’, a prefix meaning ‘extremely small’. Attached to SI units it denotes the unit × 10−6.

2. In Earth sciences, micro- is a prefix applied in the strict sense to very fine igneous textures. Individual particles are likely to be below the resolution of the naked eye so they can be resolved only with the aid of a petrological microscope (see POLARIZING MICROSCOPE). Porphyritic texture which can only be resolved by using such a microscope is termed ‘microporphyritic’ texture and the phenocrysts are ‘microphenocrysts’.

3. The prefix may also be applied to igneous rock names. For example, a syenite with a grain size below that normally accepted for a syenite but above that expected of its fine-grained equivalent, a trachyte, may be termed a microsyenite.

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"micro-." A Dictionary of Earth Sciences. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"micro-." A Dictionary of Earth Sciences. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro

"micro-." A Dictionary of Earth Sciences. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro

micro-

micro-, before a vowel micr-, comb. form of Gr. mīkrós, var. of smīkrós small, poss. rel to SMALL; used in many scientific terms. microcosm man viewed as an epitome of the universe. XV. — F. microcosme or medL. mīcro(s) cosmus — Gr. mīkròs kósmos little world. micrometer XVII. — F. micromètre. microphone XVII. microscope XVII.

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"micro-." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"micro-." The Concise Oxford Dictionary of English Etymology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/micro-3

"micro-." The Concise Oxford Dictionary of English Etymology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/micro-3

micro-

micro- • comb. form 1. small: microcar. ∎  of reduced or restricted size: microdot microprocessor. 2. (used commonly in units of measurement) denoting a factor of one millionth (10−6): microfarad.

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"micro-." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"micro-." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/micro-2

"micro-." The Oxford Pocket Dictionary of Current English. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/micro-2

micro-

micro-
1. A prefix denoting very small size; e.g. microgamete, micronucleus.

2. Symbol μ. A prefix used in the metric system to denote one millionth. For example, 10–6 metre = 1 micrometre (μm).

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"micro-." A Dictionary of Biology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"micro-." A Dictionary of Biology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro-2

"micro-." A Dictionary of Biology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro-2

micro-

micro- A prefix meaning ‘small’, from the Greek mikros, meaning ‘small’. Attached to SI units it means the unit × 10−6 (abbreviated as μ).

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"micro-." A Dictionary of Ecology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"micro-." A Dictionary of Ecology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro-0

"micro-." A Dictionary of Ecology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro-0

micro-

micro- A prefix meaning ‘small’, from the Greek mikros, ‘small’. Attached to SI units it means the unit × 10−6 (abbreviated as μ).

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"micro-." A Dictionary of Zoology. . Encyclopedia.com. 22 Aug. 2017 <http://www.encyclopedia.com>.

"micro-." A Dictionary of Zoology. . Encyclopedia.com. (August 22, 2017). http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro-1

"micro-." A Dictionary of Zoology. . Retrieved August 22, 2017 from Encyclopedia.com: http://www.encyclopedia.com/science/dictionaries-thesauruses-pictures-and-press-releases/micro-1