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单词 granum
释义

granum

[ grey-nuhm ]
/ ˈgreɪ nəm /

noun, plural gra·na [grey-nuh]. /ˈgreɪ nə/.

(in prescriptions) a grain.
Botany. one of the structural units of a chloroplast in vascular plants, consisting of layers of thylakoids.

Origin of granum

From Latin

Words nearby granum

granulosa cell, granulosa cell tumor, granulose, granulosis, granulosis rubra nasi, granum, Granville, Granville-Barker, grape, grape family, grape fern
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for granum

  • The Spanish name grana, confounded with granum, may have given rise to this contest.

    Curious Facts in the History of Insects; Including Spiders and Scorpions.|Frank Cowan

Scientific definitions for granum

granum
[ grānəm ]

Plural grana (grā)

A stacked membranous structure within the chloroplasts of plants and green algae that contains the chlorophyll and is the site of the light reactions of photosynthesis. The saclike membranes that make up grana are known as thylakoids. See more at chloroplast.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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更新时间:2024/12/25 1:53:08