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radicel

American  
[rad-uh-sel] / ˈræd əˌsɛl /

noun

Botany.
  1. a minute root; a rootlet.


radicel British  
/ ˈrædɪˌsɛl /

noun

  1. a very small root; radicle

"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

Etymology

Origin of radicel

1810–20; < New Latin rādīcella small root, rootlet, equivalent to Latin rādīc- (stem of rādīx ) root 1 + -ella -elle