A parallelogram with unequal adjacent sides.(noun)
Shaped like a rhombus or rhomboid.(adjective)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "rhomboid" in a sentence
"His team studies enzymes called rhomboid proteases that are found in a cell's membrane."
"Meanwhile, I combined Jason's earlier "rhomboid" with "flexagon" to generate 179 search results."
"It changed shape, from spherical to cuboid, then to pyramidal and to rhomboid."