Random Image for ionize
Image originally shown at http://spiff.rit.edu/classes/phys314/lectures/period/ionize_2d.jpg
Image for ionize
Possible definitions for ionize
conifer
Any member of the order Coniferales, woody plants that bear their seeds and pollen on separate, cone-shaped structures. They constitute the largest division of gymnosperms, with more than 550 species. Most are evergreen, upright trees and shrubs. They grow throughout the world (except in Antarctica) and prefer temperate climate zones. Conifers include the pines (Pinus), junipers (Juniperus), spruces (Picea), hemlocks (Tsuga), firs (Abies), larches (Larix), yews (Taxus), cypresses (Cupressus), bald cypress cypresses (Taxodium), Douglas firs (Pseudotsuga), arborvitaes (Thuja), and related groups. They include the world's smallest and tallest trees. Conifers supply softwood timber used for general construction, mine timbers, fence posts, poles, boxes and crates, and other articles, as well as pulpwood for paper. The wood is also used as fuel and in the manufacture of cellulose products, plywood, and veneers. The trees are the source of resins, volatile oils, turpentine, tars, and pharmaceuticals. Conifer leaves vary in shape but generally have a reduced surface area to minimize water loss. Especially in the pines, firs, and spruces, the leaves are long and stiff and are commonly referred to as needles. Cypresses, cedars, and others have smaller, scalelike leaves. Conifers were the dominant type of vegetation just before the advent of angiosperms (see flowering plant).
iodine
Nonmetallic chemical element, chemical symbol I, atomic number 53. The heaviest nonradioactive halogen, it is a nearly black crystalline solid (diatomic molecule I2) that sublimes (see sublimation) to a deep violet, irritating vapor. It is never found in nature uncombined. Its sources (mostly in brines and seaweeds) and compounds are usually iodides; iodates (small amounts in saltpeter) and periodates also occur. Dietary iodine is essential for thyroid gland function, so table salt usually has potassium iodide (chemical formula KI) added to prevent iodine deficiency. Elemental iodine is used in medicine, in synthesizing some organic chemicals, in manufacturing dyes, in analytical chemistry (see analysis) to measure fat saturation (see hydrogenation) and to detect starch, and in photography. The radioactive isotope I-131 (see radioactivity), with an eight-day half-life, is very useful in medicine (see nuclear medicine, thyroid function test) and other applications.
Ionia
Ancient region, W coast of Asia Minor (modern Turkey) bordering on the Aegean Sea. It consisted of a coastal strip that extended from the mouth of the Hermus River to the Halicarnassus Peninsula, a distance of 100 mi (160 km). In the 8th cent. BC there were 12 major Greek cities in the region, incl. Phocaea, Erythrae, Colophon, and Miletus on the mainland, and the islands Chios and Samos. It was very prosperous, and until 500 BC Ionic philosophy and architecture and the Ionic dialect were highly influential in Greece. In the mid-6th cent. BC, it ...
Top words beginning with I: infirmaries, ichneumonoid, iswara, isoallyl, inviolably, instarring, intechnicality, incardinate, infectiveness, infrastigmatal, inconfusedly, intercessorial, inferable, invertebrata, iaci, ingressive, inhibitive, impreventable, irradiance, infought
Browse the alphabet: A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z