usnea

noun
us·​nea | \ ˈə-snē-ə How to pronounce usnea (audio) , ˈəz-nē- How to pronounce usnea (audio) \

Definition of usnea

: any of a genus (Usnea of the family Usneaceae) of widely distributed lichens (such as old-man's beard) that have a grayish or yellow pendulous freely branched thallus

Examples of usnea in a Sentence

Recent Examples on the Web The usnea—also called old-man's beard—looked ethereal in the dappled afternoon sunlight. Hannah Wallace, Condé Nast Traveler, 6 Aug. 2021

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

First Known Use of usnea

1597, in the meaning defined above

History and Etymology for usnea

New Latin, from Arabic ushna moss

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Dictionary Entries Near usnea

USN

usnea

Usneaceae

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Cite this Entry

“Usnea.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/usnea. Accessed 22 Jan. 2022.

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More Definitions for usnea

Usnea

noun
Us·​nea | \ ˈəs-nē-ə How to pronounce Usnea (audio) \

Medical Definition of Usnea

: a genus of widely distributed lichens (family Usneaceae) including old-man's beard from which usnic acid is obtained

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