In ecosystems an excess of phosphorus can be problematic, especially in aquatic systems, see eutrophication and algal blooms. An average person contains a little less than 1 kg of phosphorus, about three quarters of which is present in bones and teeth in the form of apatite. A multivalent nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate rocks.. Due to its high reactivity, phosphorus is never found as a free element in nature. Phosphorus, (IPA: /ˈfɒsfərəs/, Greek: phôs meaning "light", and phoros meaning "bearer"), is the chemical element in the periodic table that has the symbol P and atomic number 15. In one process, tri-calcium phosphate, which is derived from phosphate rock, is heated in an electric or fuel-fired furnace in the presence of carbon and silica. The electric furnace method allowed production to increase to the point phosphorus could be used in weapons of war. All the latest wordy news, linguistic insights, offers and competitions every month. Calcium phosphate salts are used by animals to stiffen their bones. Phosphorus exists in several allotropes, most commonly white, red and black. A well-fed adult in the industrialized world consumes and excretes about 1-3 g of phosphorus per day in the form of phosphate. Due to its high reactivity, phosphorus is never found as a free element in nature. Chronic white phosphorus poisoning of unprotected workers leads to necrosis of the jaw called " phossy-jaw". Pure forms of the element are colorless and transparent. The glow from phosphorus was the attraction of its discovery around 1669, but the mechanism for that glow was not fully described until 1974. Last 10 years Webster’s New World College Dictionary, 4th Edition. Heat can be applied to drive the reaction at higher pressures. Decem means ‘ten’, but December isn’t the tenth month. Although the term phosphorescence is derived from phosphorus, the reaction is properly called luminescence (glowing by its own reaction, in this case chemoluminescence), not phosphorescence (re-emitting light that previously fell on it). Then, "Promptly debride the burn if the patient's condition will permit removal of bits of WP which might be absorbed later and possibly produce systemic poisoning. It plays an important role in enzyme systems, is an integral component of genetic material, and helps produce energy in the form of adenosine triphosphate (ATP). The allotrope white phosphorus should be kept under water at all times as it presents a significant fire hazard due to its extreme reactivity to atmospheric oxygen, and it should only be manipulated with forceps since contact with skin can cause severe burns. Red phosphorus does not catch fire in air at temperatures below 240°C whereas white phosphorus ignites at about 40°C. The word dates back to the nineteenth century and is originally Hungarian, meaning "cloak" (because the Austro-Hungarian police uniform included a cloak). Send us feedback. Early matches used white phosphorus in their composition, which was dangerous due to its toxicity. A multivalent nonmetal of the nitrogen group, phosphorus is commonly found in inorganic phosphate rocks and in all living cells. In World War I it was used in incendiaries, smoke screens and tracer bullets. Last 100 years Mr. Plod See Plod. A wide range of organophosphorus compounds are used for their toxicity to certain organisms as pesticides ( herbicides, insecticides, fungicides etc) and weaponized as nerve agents. Elemental phosphorus is then liberated as a vapor and can be collected under phosphoric acid. the availability of phosphorus governs the rate of growth of many organisms.

All Years The United States holds its presidential election on November 3rd after a long and sometimes rancorous campaign. Global demand for fertilizers led to large increases in phosphate (PO43-) production in the second half of the 20th century. A special incendiary bullet was developed to shoot at hydrogen filled Zeppelins over Britain (hydrogen of course being highly flammable if it can be ignited). It emits a faint glow upon exposure to oxygen (hence its Greek derivation and the Latin meaning 'morning star') and is an essential element for living organisms.,,, Production of white phosphorus takes place at large facilities and is transported heated in liquid form. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Delivered to your inbox! Last 50 years Create an account and sign in to access this FREE content, They are structurally closely related to (and often. In dark surroundings, fragments are seen as luminescent spots." Phosphorus definition is - a phosphorescent substance or body; especially : one that shines or glows in the dark. People covered in it were known to commit suicide due to the torment. What made you want to look up phosphorus? Here Be Dragons: A Creature Identification Quiz. How to use a word that (literally) drives some pe... Do you know what languages these words come from? Or is it? Most inorganic phosphates are relatively nontoxic and essential nutrients. Phosphorus was first made commercially, for the match industry, in the 19th century, by distilling off phosphorus vapour from precipitated phosphates heated in a retort The precipitated phosphates were made from ground-up bones that had been de-greased and treated with strong acids. Today phosphorus production is larger than ever, used as a precursor for various chemicals, in particular the herbicide glyphosate sold under the brand name Roundup. Please tell us where you read or heard it (including the quote, if possible). …

Phosphorus is an essential mineral for horses, making up 14-17% of the equine skeleton.

But hang on a moment. //]]>. Organic compounds of phosphorus form a wide class of materials, some of which are extremely toxic.

Phospholipids are the main structural components of all cellular membranes. Here are a few colourful examples of American political slang taken from the Collins Dictionary that may catch the eye across the pond: Last month, this month and the next two are great for practising Latin numerals, as you do: septem, octo, novem, decem (7, 8, 9, 10). According to the recent US Navy's Treatment of Chemical Agent Casualties and Conventional Military Chemical Injuries: FM8-285: Part 2 Conventional Military Chemical Injuries, "Cupric (copper) sulfate has been used by U.S. personnel in the past and is still being used by some nations. This process became obsolete in the late 1890s when the electric arc furnace was adapted to reduce phosphate rock. Militia Slang in Romania and various post-Soviet countries with roots from the secret police. Living cells also utilize phosphate to transport cellular energy via adenosine triphosphate (ATP). Nearly every cellular process that uses energy gets it in the form of ATP. The acid is also a starting point to make food grade phosphates. All rights reserved. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phosphorus.' Burning phosphorus is difficult to extinguish and if it splashes onto human skin it has horrific effects (see precautions below). However, copper sulfate is toxic and its use will be discontinued. The white allotrope can be produced using several different methods. Phosphate rock, which is partially made of apatite (an impure tri-calcium phosphate mineral), is an important commercial source of this element. The reaction is slow and only very little of the intermediates is required to produce the luminescence, hence the extended time the glow continues in a stoppered jar. Elemental phosphorus was first isolated (as white phosphorus) in 1669 and emitted a faint glow when exposed to oxygen – hence the name, taken from Greek mythology, Φωσφόρος meaning "light-bearer" (Latin Lucifer), referring to the "Morning Star", the planet Venus. Albright and Wilson in the United Kingdom and their Niagara Falls plant, for instance, were using phosphate rock in the 1890s and 1900s from Connetable, Tennessee and Florida; however, by 1950 they were using phosphate rock mainly from Tennessee and North Africa. Moosor Russian, lit. Further warnings of toxic effects and recommendations for treatment can be found in the Emergency War Surgery NATO Handbook: Part I: Types of Wounds and Injuries: Chapter III: Burn Injury: Chemical Burns And White Phosphorus injury. Houghton Mifflin Harcourt. (An apocryphal tale tells of a woman attempting to murder her husband with white phosphorus in his food, which was detected by the stew giving off luminous steam). White phosphorus (P4) contains only four atoms, resulting in very high ring strain and instability. They are also widely used in explosives, nerve agents, friction matches, fireworks, pesticides, toothpaste, and detergents.