[{"word":"hemoglobin","phonetics":[],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The iron-containing substance in red blood cells that transports oxygen from the lungs to the rest of the body; it consists of a protein (globulin), and haem (a porphyrin ring with an atom of iron at its centre).","synonyms":[],"antonyms":[]}],"synonyms":["HGB","Hb","Hgb"],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/hemoglobin"]}]