oyster mushroom

American  

noun

1. oyster cap.

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oyster mushroom British  

noun

1. an edible fungus, Pleurotus ostreatus, having an oyster-shaped cap, commonly found growing in clusters on the trunks of broad-leaved trees

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Etymology

Origin of oyster mushroom

First recorded in 1870–75

Example Sentences

These records allowed them to map sightings of the golden oyster mushroom across North America.

From Science Daily • Apr. 24, 2026

The oyster mushroom produces chemicals to paralyze its nematode prey within a few minutes of contact.

From National Geographic • Dec. 12, 2023

But applying the substance to worms made it clear 3-octanone had all the gruesome effects of a brush with an oyster mushroom.

From New York Times • Jan. 18, 2023

The final touch is a spoonful of translucent green algae “caviar” placed into the divot of each yellow oyster mushroom cap.

From Los Angeles Times • Jan. 5, 2023

Otherwise they were canned as the Tricholoma and oyster mushroom.

From The Mushroom, Edible and Otherwise Its Habitat and its Time of Growth by Hard, Miron Elisha