lubrication characteristic
71Reproductive system — The reproductive system is a system of organs within an organism which work together for the purpose of reproduction. Many non living substances such as fluids, hormones, and pheromones are also important accessories to the reproductive system. [ …
72conjunctivitis — /keuhn jungk teuh vuy tis/, n. Ophthalm. inflammation of the conjunctiva. [1825 35; CONJUNCTIV(A) + ITIS] * * * Inflammation of the conjunctiva, the delicate lining of the eyelids and the front of the white of the eye. It may be caused by… …
73grease — greaseless, adj. greaselessness, n. greaseproof, adj. n. /grees/; v. /grees, greez/, n., v., greased, greasing. n. 1. the melted or rendered fat of animals, esp. when in a soft state. 2. fatty or oily matter in general; lubricant. 3. Also called… …
74machine — machineless, adj. /meuh sheen /, n., v., machined, machining. n. 1. an apparatus consisting of interrelated parts with separate functions, used in the performance of some kind of work: a sewing machine. 2. a mechanical apparatus or contrivance;… …
75mechanical engineering — mechanical engineer. the branch of engineering dealing with the design and production of machinery. * * * Branch of engineering concerned with the design, manufacture, installation, and operation of engines, machines, and manufacturing processes …
76positive — positiveness, n. /poz i tiv/, adj. 1. explicitly stated, stipulated, or expressed: a positive acceptance of the agreement. 2. admitting of no question: positive proof. 3. stated; express; emphatic: a positive denial. 4. confident in opinion or… …
77clothing and footwear industry — Introduction also called apparel and allied industries, garment industries, or soft goods industries, factories and mills producing outerwear, underwear, headwear, footwear, belts, purses, luggage, gloves, scarfs, ties, and household… …
78lead processing — Introduction preparation of the ore for use in various products. Lead (Pb) is one of the oldest metals known, being one of seven metals used in the ancient world (the others are gold, silver, copper, iron, tin, and mercury). Its low… …
79nervous system, human — ▪ anatomy Introduction system that conducts stimuli from sensory receptors to the brain and spinal cord and that conducts impulses back to other parts of the body. As with other higher vertebrates, the human nervous system has two main… …
80organosulfur compound — ▪ chemical compound Introduction also spelled organosulphur compound , also called organic sulfur compound a subclass of organic substances that contain sulfur and that are known for their varied occurrence and unusual properties. They are… …
