Columbia Encyclopedia

(Encyclopedia) parsnip, garden plant (Pastinaca sativa) of the family Umbelliferae (parsley family), native to the Old World. It has been cultivated since Roman times for its long, fleshy, edible root. Wine and beer...

(Encyclopedia) factor, in arithmetic, any number that divides a given number evenly, i.e., without any remainder. The factors of 12 are 1, 2, 3, 4, 6, and 12. Similarly in algebra, any one of the algebraic expressio...

(Encyclopedia) e, in mathematics, irrational number occurring widely in mathematics and science, approximately equal to the value 2.71828; it is the base of natural, or Naperian, logarithms. The number e is defined ...

(Encyclopedia) beet, biennial or annual root vegetable of the family Chenopodiaceae (goosefoot family). The beet (Beta vulgaris) has been cultivated since pre-Christian times. Among its numerous varieties are the re...

(Encyclopedia) licorice lĭkˈərĭs, –rĭsh [key], name for a European plant (Glycyrrhiza glabra) of the family Leguminosae (pulse family) and for the sweet substance obtained from the root. Since early times the...

(Encyclopedia) absinthe ăbˈsĭnth [key], an emerald-green liqueur distilled from wormwood and other aromatics, including angelica root, sweet-flag root, star anise, and dittany, which have been macerated and steep...

(Encyclopedia) cutting, in horticulture, part of a plant stem, leaf, or root cut off and used for producing a new plant. It is a convenient and inexpensive method of propagation, not possible for all plants but used...

(Encyclopedia) electrolysis, cosmetic, method of permanently removing superfluous or unwanted hair. A fine needle is inserted into the hair follicle; the application of an electric current through the needle destroy...

(Encyclopedia) mangrove, large tropical evergreen tree, genus Rhizophora, that grows on muddy tidal flats and along protected ocean shorelines. Mangroves are most abundant in tropical Asia, Africa, and the islands o...

(Encyclopedia) sap, fluid in plants consisting of water and dissolved substances. Cell sap refers to this fluid present in the large vacuole, or cell cavity, that occupies most of the central portion of mature plant...