solidity

solid +‎ -ity, from Middle French solidité, from Latin soliditās.

• IPA^(key): /səˈlɪdɪti/

• Audio (Southern England)

  (file)

solidity (countable and uncountable, plural solidities)

1. The state or quality of being solid.
   • 1739, David Hume, “Book 1, part 4, section 4”, in Treatise of Human Nature:

     If colours, sounds, tastes, and smells be merely perceptions, nothing we can conceive is possest of a real, continu'd, and independent existence; not even motion, extension and solidity, which are the primary qualities chiefly insisted on.

2. Moral firmness; validity; truth; certainty.
3. (geometry) The solid contents of a body; volume; amount of enclosed space.

(state of being solid): (depending on the meaning of solid)

• compactness
• consistency
• density
• fullness
• hardness
• massiveness
• solidness
• soundness
• strength

(antonym(s) of “sense of being solid”):

• fluidity
• hollowness
• instability
• openness
• weakness