tap-root

taproot

[tap-root, -root]
noun Botany.
a main root descending downward from the radicle and giving off small lateral roots.

Origin:
1595–1605; tap2 + root1

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To tap-root
Collins
World English Dictionary
taproot (ˈtæpˌruːt)
 
n
the large single root of plants such as the dandelion, which grows vertically downwards and bears smaller lateral roots
 
[C17: from tap² + root1]
 
'taprooted
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

taproot
c.1600, from tap (n.) + root (n.).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
American Heritage
Science Dictionary
taproot   (tāp'rt', -rt')  Pronunciation Key 


(click for larger image in new window)

The main root in gymnosperms, eudicotyledons, and magnoliids, usually stouter than the lateral roots and growing straight downward from the stem. The taproot develops from the primary root. The taproot and its lateral roots penetrate deeper into the soil than the fibrous roots characteristic of monocotyledons. Compare fibrous root.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Cultural Dictionary

taproot definition


The single deep root of many deciduous trees that forms the basis for their root systems.

Note: Figuratively, a “taproot” is the source of an idea or work: “His childhood in Wales is the taproot of his poetry.”
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature