| microevolution |
the slight hereditary alteration of an organism, as by new combinations of genes, that precedes a small degree of change in a particular form of life. |
| microfiber |
a very fine synthetic fiber, or the typically soft fabric made from such fiber. |
| microfiche |
a card-sized sheet of microfilm for storage of photographically reduced images, usu. of many pages of text or data. |
| microfilm |
a film for recording highly reduced photographic images of material such as text or drawings. [2 definitions] |
| microfilmable |
combined form of microfilm. |
| microfluidic |
of or pertaining to the controlled flow of liquid through minute, hairlike tubes. |
| microfluidics |
the field that deals with manipulating the flow of liquids through minute, hairlike tubes. [2 definitions] |
| microform |
any form or type of photographically reduced document or print, such as microfilm or microfiche. |
| microgram |
a unit of weight equal to one millionth of a gram. [2 definitions] |
| micrograph |
a drawing or photograph of something as it is seen through a microscope. [2 definitions] |
| microgroove |
an especially fine groove on a long-playing record, or a record having such a groove. |
| micrometer1 |
an instrument for measuring minute distances, angles, diameters, and the like in telescopic and microscopic images. [2 definitions] |
| micrometer2 |
see "micron." |
| micrometer caliper |
a precision caliper with a spindle that is moved by a micrometer screw, used for measuring minute distances with extreme accuracy. |
| micrometer screw |
a very finely threaded screw that is used in micrometers to give extremely fine measurements, esp. of thickness. |
| micrometry |
measuring with micrometers. |
| micron |
a unit of length equal to one millionth of a meter. |
| Micronesia |
one of the three principal Pacific island groups, north of the equator, between the Philippines and the international date line. (Cf. Melanesia, Polynesia.) [2 definitions] |
| Micronesian |
of or pertaining to Micronesia or its people, cultures, languages, or the like. [3 definitions] |
| micronucleus |
the smaller of two kinds of nuclei that are found in certain protozoans and that are associated with genetics and reproduction. |
| micronutrient |
an element that, in extremely small amounts, is necessary for the health of an organism. |