root hair

noun

Definition of root hair

: a filamentous extension of an epidermal cell near the tip of a rootlet that functions in absorption of water and minerals — see seedling illustration

Examples of root hair in a Sentence

Recent Examples on the Web

Once the tree roots reach the edge, the leading root hairs grow through but then are pinched by the fabric. Adrian Higgins, idahostatesman, "Preparing trees to go from green pastures to the concrete jungle | Idaho Statesman," 20 Dec. 2017 When your plant is transplanted, it can be stressed if there is damage to root hairs, as this will impede water absorption until the plant can replace them. Rita Perwich, sandiegouniontribune.com, "Transplanting rosebush need not be thorny issue," 5 Oct. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'root hair.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of root hair

1841, in the meaning defined above

Keep scrolling for more

Learn More about root hair

Statistics for root hair

Look-up Popularity

Time Traveler for root hair

The first known use of root hair was in 1841

See more words from the same year

More from Merriam-Webster on root hair

Rhyming Dictionary: Words that rhyme with root hair

Britannica.com: Encyclopedia article about root hair

Comments on root hair

What made you want to look up root hair? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

one that collects or salvages junk

Get Word of the Day daily email!

Test Your Vocabulary

Time Traveler Quiz: Which Word Came First?

  • time traveler quiz which word came first
  • Which came first?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!