[{"word":"haem","phonetic":"/hiːm/","phonetics":[{"text":"/hiːm/","audio":""}],"meanings":[{"partOfSpeech":"noun","definitions":[{"definition":"The component of hemoglobin (and other hemoproteins) responsible for binding oxygen. It consists of an iron ion that binds oxygen and a porphyrin ring that binds the globin molecules; one molecule binds one molecule of oxygen.","synonyms":[],"antonyms":[]}],"synonyms":[],"antonyms":[]}],"license":{"name":"CC BY-SA 3.0","url":"https://creativecommons.org/licenses/by-sa/3.0"},"sourceUrls":["https://en.wiktionary.org/wiki/haem","https://en.wiktionary.org/wiki/heme"]}]