histidine

[ his-ti-deen, -din ]
/ ˈhɪs tɪˌdin, -dɪn /

noun Biochemistry.

an essential amino acid, C3H3N2CH2CH(NH2)COOH, that is a constituent of proteins and is important as the iron-binding site in hemoglobin. Abbreviation: His; Symbol: H
Also his·ti·din [his-ti-din] /ˈhɪs tɪ dɪn/.

Origin of histidine

First recorded in 1895–1900; hist- + -id3 + -ine2

Words nearby histidine

histaminemia, histaminic headache, histaminuria, histidase, histidinase, histidine, histidine ammonia-lyase, histidine decarboxylase, histidinemia, histidinuria, histidyl

British Dictionary definitions for histidine

histidine
/ (ˈhɪstɪˌdiːn, -dɪn) /

noun

a nonessential amino acid that occurs in most proteins: a precursor of histamine

Medical definitions for histidine

histidine
[ hĭs′tĭ-dēn′, -dĭn ]

n.

An amino acid that is essential for tissue growth and repair.

Scientific definitions for histidine

histidine
[ hĭs′tĭ-dēn′ ]

An amino acid that is essential for children but not for adults. Chemical formula: C6H9N3O2.