undesirable
111Global Prescience — Looking for a lesson in humility? Stand at a major historical marker, and try drawing a perfectly reasonable, prudent conclusion about where that marker is pointing. Believe me, if you read about a 15th century traveler saying, I have to get back …
112eugenics — /yooh jen iks/, n. (used with a sing. v.) the study of or belief in the possibility of improving the qualities of the human species or a human population, esp. by such means as discouraging reproduction by persons having genetic defects or… …
113noise — /noyz/, n., v., noised, noising. n. 1. sound, esp. of a loud, harsh, or confused kind: deafening noises. 2. a sound of any kind: to hear a noise at the door. 3. loud shouting, outcry, or clamor. 4. a nonharmonious or discordant group of sounds. 5 …
114weed — weed1 weedless, adj. weedlike, adj. /weed/, n. 1. a valueless plant growing wild, esp. one that grows on cultivated ground to the exclusion or injury of the desired crop. 2. any undesirable or troublesome plant, esp. one that grows profusely… …
115wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …
116Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …
117dairy product — Introduction milk and any of the foods made from milk, including butter, cheese, ice cream, yogurt, and condensed and dried milk. Milk has been used by humans since the beginning of recorded time to provide both fresh and storable… …
118human aging — ▪ physiology and sociology Introduction physiological changes that take place in the human body leading to senescence, the decline of biological functions and of the ability to adapt to metabolic stress. In humans the physiological… …
119petroleum refining — Introduction conversion of crude oil into useful products. History Distillation of kerosene and naphtha The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …
120plant breeding — Introduction application of genetic (genetics) principles to produce plants that are more useful to humans. This is accomplished by selecting plants found to be economically or aesthetically desirable, first by controlling the mating of… …
