Taber’s Online
The latest edition of Taber’s Medical Dictionary Online provides more than 75,000 definitions, 33,700 audio pronunciations, 1,300 images, and 130 videos. Add mobile access to download Taber’s onto your smartphone and tablet.
Choose a plan to fit your needs
Whether you are a healthcare professional, educator, or student, Taber’s provides the most comprehensive medical definitions right when you need them.
...or explore the Taber’s App
(prōt″ō-por′fĭ-rĭn )
[ proto- + porphyrin ]
A derivative of hemoglobin containing four pyrrole nuclei; C34H34N4O4. It occurs naturally and is formed from heme (ferriprotoporphyrin) by deletion of an atom of iron.
ABBR: ZPP A protoporphyrin molecule in which zinc ions are used by the body to make hemoglobin when iron is missing, e.g. in iron-deficiency anemia.
Free iOS and Android Preview
Download the new edition of Taber’s for a free preview. Scan the QR Code with the camera on your mobile device for access.
Stressed about NCLEX®?
The best NCLEX-prep on the market—12,500 questions, including brand-new clinical judgment questions!
Save 20% with REVIEW19