San Jose scale


San Jo·​se scale ˌsa-nə-ˈzā- How to pronounce San Jose scale (audio)
: a scale insect (Quadraspidiotus perniciosus) probably of Asian origin that is naturalized in the U.S. and is destructive to fruit trees

Examples of San Jose scale in a Sentence

Recent Examples on the Web When numerous, armored scale (the group to which San Jose scale belongs) will potentially cause plant stunting or dieback. Miri Talabac, Baltimore Sun, 18 July 2023 Farmers searched for pesticides that could stop the San Jose scale. Carl Zimmer, Discover Magazine, 4 May 2010 After a few weeks of spraying, the San Jose scale would disappear. Carl Zimmer, Discover Magazine, 4 May 2010

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'San Jose scale.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


San Jose, California

First Known Use

1887, in the meaning defined above

Time Traveler
The first known use of San Jose scale was in 1887

Dictionary Entries Near San Jose scale

Cite this Entry

“San Jose scale.” Dictionary, Merriam-Webster, Accessed 21 Sep. 2023.

Kids Definition

San Jose scale

San Jo·​se scale ˌsan-ə-ˌzā- How to pronounce San Jose scale (audio)
: a scale insect introduced into North America from Asia that is very destructive to fruit trees

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