heliotropism

play
noun he·li·ot·ro·pism \ˌhē-lē-ˈä-trə-ˌpi-zəm\

Definition of heliotropism

  1. :  phototropism in which sunlight is the orienting stimulus

heliotropic

play \ˌhē-lē-ə-ˈtrō-pik, -ˈträ-\ adjective

Circa 1854

First Known Use of heliotropism

circa 1854


Medical Dictionary

heliotropism

play
noun he·li·ot·ro·pism \ˌhē-lē-ˈä-trə-ˌpiz-əm\

Medical Definition of heliotropism

  1. :  phototropism in which sunlight is the orienting stimulus

heliotropic

\-lē-ə-ˈtrōp-ik, -ˈträp-\play play adjective

Seen and Heard

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

Love words? Need even more definitions?

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

WORD OF THE DAY

a person who is a bore or nuisance

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • peter-bruegel-tower-of-babel-painting
  • What language does pajama come from?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

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!