histidine

American

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

Also histidin

noun

Biochemistry.

an essential amino acid, C 3 H 3 N 2 CH 2 CH(NH2 )COOH, that is a constituent of proteins and is important as the iron-binding site in hemoglobin. His; H

histidine British

/ ˈhɪstɪˌdiːn, -dɪn /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

histidine Scientific

/ hĭs′tĭ-dēn′ /

An amino acid that is essential for children but not for adults. Chemical formula: C ₆ H ₉ N ₃ O ₂ .

Etymology

Origin of histidine

First recorded in 1895–1900; hist- + -id ³ + -ine ²

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023