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
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
Yes, I adore the bivalves themselves — those sweet, saline nuggets plucked out of their blue-black shells.
From Seattle Times ● Sep. 26, 2022
After a few minutes, the potion turned from blue-black to a dark honey brown.
From "Impossible Creatures" by Katherine Rundell
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.
