adj. sol·id·er, sol·id·est
a. Of definite shape and volume; not liquid or gaseous: It was so cold the water in the bucket became solid.
b. Mathematics Of or relating to three-dimensional geometric figures or bodies.
c. Firm or compact in substance: The floor was solid and would not give way.
a. Not hollowed out: a solid block of wood.
b. Being the same substance or color throughout: solid gold.
c. Having no gaps or breaks; continuous: a solid line of people; worked for a solid week.
d. Acting together; unanimous: a solid voting bloc.
e. Written without a hyphen or space. For example, the word software is a solid compound.
f. Printing Having no leads between the lines.
a. Of good quality: off to a solid start.
b. Substantial; hearty: a solid meal.
c. Sound; reliable: solid facts.
d. Financially sound: a solid business.
e. Upstanding or dependable: a solid citizen.
f. Slang Excellent; first-rate.
1. A substance having a definite shape and volume; one that is neither liquid nor gaseous.
2. Mathematics A geometric figure having three dimensions.
1. Without a break or opening; completely or continuously: The theater was booked solid for a month.
2. As a whole; unanimously: The committee voted solid for the challenger.
[Middle English solide, from Old French, from Latin solidus; see sol- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The American Heritage Dictionary Blog
Check out our blog, updated regularly, for new words and revised definitions, interesting images from the 5th edition, discussions of usage, and more.
American Heritage Dictionary Products
The American Heritage Dictionary, 5th Edition
The American Heritage Dictionary of Idioms
The American Heritage Roget's Thesaurus
Curious George's Dictionary
The American Heritage Children's Dictionary
The American Heritage Dictionary of Indo-European Roots
The American Heritage Student Grammar Dictionary
The American Heritage Desk Dictionary + Thesaurus
The American Heritage Science Dictionary
The American Heritage Dictionary of Business Terms
The American Heritage Student Dictionary
The American Heritage Essential Student Thesaurus