请输入您要查询的英文单词:
单词
melatonin
释义
WordReference Random House Unabridged Dictionary of American English © 2024
mel•a•to•nin
(mel′ə tō
′
nin),
USA pronunciation
n.
[
Physiol.
]
Biochemistry, Physiology
a hormone secreted by the pineal gland in inverse proportion to the amount of light received by the retina, important in the regulation of biorhythms: in amphibians, it causes a lightening of the skin.
Greek
mélā
(
s
) black +
tone
+ -
in
2
1955–60
随便看
false cast
false color
false-color
false colors
false colour
false dawn
false decretals
false diamond
false dragonhead
false face
false front
false fruit
false-hearted
false-heartedly
false-heartedness
false hellebore
falsehood
false horizon
false imprisonment
false indigo
false ipecac
false labor
false lily of the valley
falsely
false-memory syndrome
英语词典包含188688条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。
Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/12/8 7:10:03