phosphorus

[ fos-fer-uhs ]

/ ˈfɒs fər əs /

noun, plural phos·pho·ri [fos-fuh-rahy]. /ˈfɒs fəˌraɪ/.

Chemistry. a solid, nonmetallic element existing in at least three allotropic forms, one that is yellow, poisonous, flammable, and luminous in the dark, one that is red, less poisonous, and less flammable, and another that is black, insoluble in most solvents, and the least flammable. The element is used in forming smoke screens, its compounds are used in matches and phosphate fertilizers, and it is a necessary constituent of plant and animal life in bones, nerves, and embryos. Symbol: P; atomic weight: 30.974; atomic number: 15; specific gravity: (yellow) 1.82 at 20°C, (red) 2.20 at 20°C, (black) 2.25–2.69 at 20°C.

any phosphorescent substance.

phosphor.

Origin of phosphorus

1620–30; <New Latin phōsphorus phosphorus;Latin: morning star; see Phosphor

Words nearby phosphorus

phosphoro-, phosphorolysis, phosphoroscope, phosphorous, phosphorous acid, phosphorus, phosphorus 32, phosphorus pentoxide, phosphorus sesquisulfide, phosphorus trichloride, phosphorylase

Definition for phosphorus (2 of 2)

Phosphorus

[ fos-fer-uhs ]

/ ˈfɒs fər əs /

noun

Phosphor.

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for phosphorus

Theophylactus says “that the bright shining stone in the image of Phosphorus he understands to be the sun.”
Fishes, Flowers, and Fire as Elements and Deities in the Phallic Faiths and Worship of the Ancient Religions of Greece, Babylon,|Anonymous
Phosphorus is still used as the principal chemical ingredient in the manufacture of matches.
Great Inventions and Discoveries|Willis Duff Piercy
Oxycinnolin carboxylic acid on heating gives oxycinnolin, melting at 225, which with phosphorus pentachloride gives chlorcinnolin.
Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4|Various
We hoped to find some cheap method of restoring nitrogen and phosphorus to the worn-out soil which our poor peasants till.
The Maids of Paradise|Robert W. (Robert William) Chambers

It was too dark under the trees to distinguish faces, especially when distorted from the glowing of the phosphorus.
The Putnam Hall Encampment|Arthur M. Winfield

British Dictionary definitions for phosphorus (1 of 2)

phosphorus

/ (ˈfɒsfərəs) /

noun

an allotropic nonmetallic element occurring in phosphates and living matter. Ordinary phosphorus is a toxic flammable phosphorescent white solid; the red form is less reactive and nontoxic: used in matches, pesticides, and alloys. The radioisotope phosphorus-32 (radiophosphorus), with a half-life of 14.3 days, is used in radiotherapy and as a tracer. Symbol: P; atomic no: 15; atomic wt: 30.973 762; valency: 3 or 5; relative density: 1.82 (white), 2.20 (red); melting pt: 44.1°C (white); boiling pt: 280°C (white)

a less common name for a phosphor

Word Origin for phosphorus

C17: via Latin from Greek phōsphoros light-bringing, from phōs light + pherein to bring

British Dictionary definitions for phosphorus (2 of 2)

Phosphorus

/ (ˈfɒsfərəs) /

noun

a morning star, esp Venus

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for phosphorus

phosphorus

[ fŏs′fər-əs ]

n. Symbol P

A highly reactive poisonous nonmetallic element occurring naturally in phosphates, such as hydroxyapatite, and an essential constituent of protoplasm, nerve tissue, and bone. Its radioisotope is used to localize and treat cancers and peritoneal or pleural effusions caused by metastatic disease, to determine blood volume, to study peripheral vascular disease, and to treat blood diseases such as polycythemia vera, chronic myelocytic leukemia, and chronic lymphocytic leukemia. Atomic number 15.

A phosphorescent substance.

Scientific definitions for phosphorus

phosphorus

[ fŏs′fər-əs ]

P

A highly reactive, poisonous nonmetallic element occurring naturally in phosphates, especially in the mineral apatite. It exists in white (or sometimes yellow), red, and black forms, and is an essential component of protoplasm. Phosphorus is used to make matches, fireworks, and fertilizers and to protect metal surfaces from corrosion. Atomic number 15; atomic weight 30.9738; melting point (white) 44.1°C; boiling point 280°C; specific gravity (white) 1.82; valence 3, 5. See Periodic Table.

单词	phosphorus
释义	phosphorus [ fos-fer-uhs ] / ˈfɒs fər əs / noun, plural phos·pho·ri [fos-fuh-rahy]. /ˈfɒs fəˌraɪ/. Chemistry. a solid, nonmetallic element existing in at least three allotropic forms, one that is yellow, poisonous, flammable, and luminous in the dark, one that is red, less poisonous, and less flammable, and another that is black, insoluble in most solvents, and the least flammable. The element is used in forming smoke screens, its compounds are used in matches and phosphate fertilizers, and it is a necessary constituent of plant and animal life in bones, nerves, and embryos. Symbol: P; atomic weight: 30.974; atomic number: 15; specific gravity: (yellow) 1.82 at 20°C, (red) 2.20 at 20°C, (black) 2.25–2.69 at 20°C. any phosphorescent substance. phosphor. Origin of phosphorus 1620–30; <New Latin phōsphorus phosphorus;Latin: morning star; see Phosphor Words nearby phosphorus phosphoro-, phosphorolysis, phosphoroscope, phosphorous, phosphorous acid, phosphorus, phosphorus 32, phosphorus pentoxide, phosphorus sesquisulfide, phosphorus trichloride, phosphorylase Definition for phosphorus (2 of 2) Phosphorus [ fos-fer-uhs ] / ˈfɒs fər əs / noun Phosphor. Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for phosphorus Theophylactus says “that the bright shining stone in the image of Phosphorus he understands to be the sun.” Fishes, Flowers, and Fire as Elements and Deities in the Phallic Faiths and Worship of the Ancient Religions of Greece, Babylon,\|Anonymous Phosphorus is still used as the principal chemical ingredient in the manufacture of matches. Great Inventions and Discoveries\|Willis Duff Piercy Oxycinnolin carboxylic acid on heating gives oxycinnolin, melting at 225, which with phosphorus pentachloride gives chlorcinnolin. Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 4\|Various We hoped to find some cheap method of restoring nitrogen and phosphorus to the worn-out soil which our poor peasants till. The Maids of Paradise\|Robert W. (Robert William) Chambers It was too dark under the trees to distinguish faces, especially when distorted from the glowing of the phosphorus. The Putnam Hall Encampment\|Arthur M. Winfield British Dictionary definitions for phosphorus (1 of 2) phosphorus / (ˈfɒsfərəs) / noun an allotropic nonmetallic element occurring in phosphates and living matter. Ordinary phosphorus is a toxic flammable phosphorescent white solid; the red form is less reactive and nontoxic: used in matches, pesticides, and alloys. The radioisotope phosphorus-32 (radiophosphorus), with a half-life of 14.3 days, is used in radiotherapy and as a tracer. Symbol: P; atomic no: 15; atomic wt: 30.973 762; valency: 3 or 5; relative density: 1.82 (white), 2.20 (red); melting pt: 44.1°C (white); boiling pt: 280°C (white) a less common name for a phosphor Word Origin for phosphorus C17: via Latin from Greek phōsphoros light-bringing, from phōs light + pherein to bring British Dictionary definitions for phosphorus (2 of 2) Phosphorus / (ˈfɒsfərəs) / noun a morning star, esp Venus Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Words related to phosphorus daystar Medical definitions for phosphorus phosphorus [ fŏs′fər-əs ] n. Symbol P A highly reactive poisonous nonmetallic element occurring naturally in phosphates, such as hydroxyapatite, and an essential constituent of protoplasm, nerve tissue, and bone. Its radioisotope is used to localize and treat cancers and peritoneal or pleural effusions caused by metastatic disease, to determine blood volume, to study peripheral vascular disease, and to treat blood diseases such as polycythemia vera, chronic myelocytic leukemia, and chronic lymphocytic leukemia. Atomic number 15. A phosphorescent substance. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for phosphorus phosphorus [ fŏs′fər-əs ] P A highly reactive, poisonous nonmetallic element occurring naturally in phosphates, especially in the mineral apatite. It exists in white (or sometimes yellow), red, and black forms, and is an essential component of protoplasm. Phosphorus is used to make matches, fireworks, and fertilizers and to protect metal surfaces from corrosion. Atomic number 15; atomic weight 30.9738; melting point (white) 44.1°C; boiling point 280°C; specific gravity (white) 1.82; valence 3, 5. See Periodic Table. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	dermatomyositis dermatoneurosis dermatopathic lymphadenopathy dermatopathology dermatopathy dermatophagoides pteronyssinus dermatophyte dermatophytid dermatophytosis dermatoplasty dermatopolyneuritis dermatosclerosis dermatosis dermatosis medicamentosa dermatosis papulosa nigra dermatotherapy dermatotropic -dermatous dermatozoon dermatropic dermestid dermic dermis dermo- dermoblast

phosphorus

noun, plural phos·pho·ri [fos-fuh-rahy]. /ˈfɒs fəˌraɪ/.

Origin of phosphorus

Words nearby phosphorus

Definition for phosphorus (2 of 2)

noun

Example sentences from the Web for phosphorus

British Dictionary definitions for phosphorus (1 of 2)

noun

Word Origin for phosphorus

British Dictionary definitions for phosphorus (2 of 2)

noun

Words related to phosphorus

Medical definitions for phosphorus

n. Symbol P

Scientific definitions for phosphorus

P