rayless goldenrod

noun

: a shrubby to herbaceous composite plant (Haplopappus heterophyllus synonym Isocoma wrightii) especially of open saline ground from Texas to Arizona and northern Mexico that lacks ray flowers and causes trembles in cattle

Word History

First Known Use

1923, in the meaning defined above

Time Traveler
The first known use of rayless goldenrod was in 1923

Dictionary Entries Near rayless goldenrod

Cite this Entry

“Rayless goldenrod.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rayless%20goldenrod. Accessed 15 Apr. 2024.

Medical Definition

rayless goldenrod

noun
ray·​less goldenrod ˈrā-ləs- How to pronounce rayless goldenrod (audio)
: a shrubby or herbaceous composite plant (Haplopappus heterophyllus synonym Isocoma wrightii) that occurs especially on open saline ground from Texas to Arizona and northern Mexico and causes trembles in cattle
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