blue-black
Americanadjective
Other Word Forms
Etymology
Origin of blue-black
First recorded in 1815–25
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
One especially noticeable blue-black patch in the rougher section of the valley is believed to be volcanic ash that was later redistributed by Martian winds, as seen in the accompanying 3D perspective views.
From Science Daily ● May 15, 2026
The large blue-black wasps with bright orange wings are “a much better way to estimate the spider population than trying to actually find the spiders, which are intensely secretive,” Yanega said.
From Los Angeles Times ● Aug. 4, 2025
However, the huckleberry provides more wildlife benefits with spring flowers for native pollinators, followed by blue-black berries for wild birds in late summer.
From Seattle Times ● Jan. 13, 2024
At this moment, the sky will turn from light blue to dark blue-black, and you will be able to suddenly see a few stars in the sky along with the planet Mercury.
From Salon ● Apr. 27, 2023
The blue-black night all around, the black, black water, San Francisco like a bright box of lights.
From "Al Capone Does My Shirts" by Gennifer Choldenko
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
