Hillsboro

geographical name

Hills·​boro ˈhilz-ˌbər-ō How to pronounce Hillsboro (audio)
city in northwestern Oregon west of Portland population 91,611

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Hill reaction
Hillsboro
hillside
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“Hillsboro.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/Hillsboro. Accessed 4 Nov. 2025.

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