Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The component of haemoglobin responsible for binding oxygen, consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a complex red organic pigment containing iron and other atoms to which oxygen binds

Etymologies

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Examples

  • And this leaves just the central core of the haemoglobin called the haem group, which is what's known as a porphyrin ring.

    - The Naked Scientists Naked Science Radio Show PODCAST - Stripping Down Science 2010

  • Other nutritional virtues include the easily absorbed iron known as "haem" iron.

    Top stories from Times Online 2009

  • "Non-haem" iron from plant foods such as baked beans, nuts, seeds and dark green, leafy vegetables is less well absorbed than "haem" iron in meat.

    Top stories from Times Online 2009

  • Experts suspect that haem, the pigment which gives red meat its color, damages cells in the digestive system, which may lead to cancer.

    Cut red meat to lower cancer risk 2011

  • Experts suspect that haem, the pigment which gives red meat its color, damages cells in the digestive system, which may lead to cancer.

    Cut red meat to lower cancer risk 2011

  • Haem iron is only found in animal tissues, non-haem iron is found in grains, fruits, vegetable, legumes, nuts and eggs.

    Archive 2007-06-01 2007

  • Haem iron is only found in animal tissues, non-haem iron is found in grains, fruits, vegetable, legumes, nuts and eggs.

    cas·sou·let 2007

  • Haem iron is most readily absorbed by the body and also increases the uptake of non-haem iron.

    Archive 2007-06-01 2007

  • Haem iron is most readily absorbed by the body and also increases the uptake of non-haem iron.

    cas·sou·let 2007

  • Most striking was the finding that depletion of haem, and addition of GSSG or dsRNA all seemed to have similar effects on cell-free protein synthesis in the reticulocyte lysate, as though these disparate agents all acted in a similar manner.

    Tim Hunt - Autobiography 2002

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