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adjective sol·id \ˈsä-ləd\

Simple Definition of solid

  • : firm or hard : not having the form of a gas or liquid

  • : having no space inside : not hollow

  • : made entirely from the specified material

Full Definition of solid

  1. 1a :  being without an internal cavity <a solid ball of rubber>b (1) :  printed with minimum space between lines (2) :  joined without a hyphen <a solid compound>c :  not interrupted by a break or opening <a solid wall>

  2. 2 :  having, involving, or dealing with three dimensions or with solids <a solid configuration>

  3. 3a :  of uniformly close and coherent texture :  not loose or spongy :  compactb :  possessing or characterized by the properties of a solid :  neither gaseous nor liquid <solid waste>

  4. 4 :  of good substantial quality or kind <solid comfort>: asa :  sound <solid reasons>b :  made firmly and well <solid furniture> c :  reliable <a solid performer>

  5. 5a :  having no break or interruption <waited three solid hours>b :  unanimous <had the solid support of the party>c :  intimately friendly or associated <solid with the boss>

  6. 6a :  prudent; also :  well established financiallyb :  serious in purpose or character

  7. 7 :  of one substance or character: asa :  entirely of one metal or containing the minimum of alloy necessary to impart hardness <solid gold>b :  of a single color

sol·id·ly adverb
sol·id·ness noun

Examples of solid

  1. Concrete is a solid material.

  2. When ice melts, it passes from a solid to a liquid form.

  3. I was on a liquid diet when I was sick because I couldn't digest solid food.

  4. I was glad to get off the plane and back on solid ground.

  5. The pond was frozen solid.

  6. The ring is solid gold.

  7. a chunk of solid marble

  8. I prefer solid colors like blue or green instead of plaids and stripes.

Origin of solid

Middle English solide, from Middle French, from Latin solidus; akin to Greek holos whole — more at safe

First Known Use: 14th century

Other Chemical Engineering Terms

Rhymes with solid



noun sol·id

Simple Definition of solid

  • : a solid substance : a substance that is not a gas or a liquid

  • geometry : an object that has length, width, and height : a three-dimensional object

  • solids : foods that are not liquid

Full Definition of solid

  1. 1 :  a geometrical figure or element (as a cube or sphere) having three dimensions — see volume table

  2. 2a :  a substance that does not flow perceptibly under moderate stress, has a definite capacity for resisting forces (as compression or tension) which tend to deform it, and under ordinary conditions retains a definite size and shapeb :  the part of a solution or suspension that when freed from solvent or suspending medium has the qualities of a solid —usually used in plural <milk solids>

  3. 3 :  something that is solid: asa :  a solid colorb :  a compound word whose members are joined together without a hyphen

Examples of solid

  1. She couldn't eat solids after the surgery.

15th Century

First Known Use of solid

15th century

Other Chemical Engineering Terms



adverb sol·id

Definition of solid

  1. :  in a solid manner; also :  unanimously


First Known Use of solid


Seen and Heard

What made you want to look up solid? Please tell us where you read or heard it (including the quote, if possible).


February 12, 2016

of, relating to, or suggestive of marble

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