Porphyrin



[pawr-fuh-rin] /ˈpɔr fə rɪn/

noun, Biochemistry.
1.
a dark red, photosensitive pigment consisting of four pyrrole rings linked by single carbon atoms: a component of chlorophyll, heme, and vitamin B 1 2 .
/ˈpɔːfɪrɪn/
noun
1.
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

porphyrin por·phy·rin (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.
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.

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    porphyrinogen por·phy·rin·o·gen (pôr’fə-rĭn’ə-jən, -jěn’) n. Any of the intermediates in the biosynthesis of heme.

  • Porphyrinuria

    porphyrinuria por·phy·ri·nu·ri·a (pôr’fə-rə-nur’ē-ə, -nyur’-) n. The excretion of abnormal concentrations of porphyrins and related compounds in the urine. Also called purpurinuria.



  • Porphyritic

    [pawr-fuh-rit-ik] /ˌpɔr fəˈrɪt ɪk/ adjective, Petrology. 1. of, pertaining to, containing, or resembling , its texture, or its structure. /ˌpɔːfɪˈrɪtɪk/ adjective 1. (of rocks) having large crystals in a fine groundmass of minerals 2. consisting of porphyry porphyry (pôr’fə-rē) An igneous rock containing the large crystals known as phenocrysts embedded in a fine-grained matrix. porphyritic […]

  • Porphyrize

    [pawr-fuh-rahyz] /ˈpɔr fəˌraɪz/ verb (used with object), porphyrized, porphyrizing. 1. to subject to .



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