porphyrin

[ pawr-fuh-rin ]

/ ˈpɔr fə rɪn /

noun Biochemistry.

a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B12.

Origin of porphyrin

1905–10; <Greek porphýr(a) purple + -in²

Words nearby porphyrin

porphin, porphobilin, porphobilinogen, porphyria, porphyria cutanea tarda, porphyrin, porphyrinogen, porphyrinuria, porphyritic, porphyrization, porphyrize

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

British Dictionary definitions for porphyrin

porphyrin

/ (ˈpɔːfɪrɪn) /

noun

any of a group of pigments occurring widely in animal and plant tissues and having a heterocyclic structure formed from four pyrrole rings linked by four methylene groups

Word Origin for porphyrin

C20: from Greek porphura purple, referring to its colour

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 porphyrin

porphyrin

[ pôr′fə-rĭn ]

n.

Any of various heterocyclic compounds, derived from pyrrole, that occur universally in protoplasm, contain a central metal atom, and provide the foundation structure for hemoglobin, chlorophyll, and certain enzymes.

Scientific definitions for porphyrin

porphyrin

[ pôr′fə-rĭn ]

Any of various organic pigments containing four pyrrole rings bonded to one another. The rings form the corners of a large flat square, in the middle of which is a cavity that often contains a metal atom. Porphyrins occur universally in protoplasm and function with bound metals such as iron in hemoglobin and magnesium in chlorophyll.

单词	porphyrin
释义	porphyrin [ pawr-fuh-rin ] / ˈpɔr fə rɪn / noun Biochemistry. a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B12. Origin of porphyrin 1905–10; <Greek porphýr(a) purple + -in² Words nearby porphyrin porphin, porphobilin, porphobilinogen, porphyria, porphyria cutanea tarda, porphyrin, porphyrinogen, porphyrinuria, porphyritic, porphyrization, porphyrize Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for porphyrin porphyrin / (ˈpɔːfɪrɪn) / noun any of a group of pigments occurring widely in animal and plant tissues and having a heterocyclic structure formed from four pyrrole rings linked by four methylene groups Word Origin for porphyrin C20: from Greek porphura purple, referring to its colour 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 porphyrin porphyrin [ pôr′fə-rĭn ] n. Any of various heterocyclic compounds, derived from pyrrole, that occur universally in protoplasm, contain a central metal atom, and provide the foundation structure for hemoglobin, chlorophyll, and certain enzymes. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for porphyrin porphyrin [ pôr′fə-rĭn ] Any of various organic pigments containing four pyrrole rings bonded to one another. The rings form the corners of a large flat square, in the middle of which is a cavity that often contains a metal atom. Porphyrins occur universally in protoplasm and function with bound metals such as iron in hemoglobin and magnesium in chlorophyll. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
随便看	ardella arden ardennes ardent ardent spirits ardi ardipithecus ardipithecus kadabba ardipithecus ramidus ardmore ardor ardour ards arduous ardèche are area area 51 area bombing area code areal areal velocity area of cardiac dullness area of outstanding natural beauty area opaca