Solidity
/səˈlɪd.ɪ.ti/noun
The quality or state of being firm, hard, or stable.
Did you know?“Solidity” ultimately traces back to Latin *solidus*, a word for something complete, firm, and entire, and that same root also gave English the word “soldier,” originally tied to pay and the solid coin used to pay them.
Etymological Timeline
Proto-Indo-European
PIE
*sol-
“to be whole, firm, or intact”
Latin
Latin
solidus
“firm, dense, whole, entire”
Late Latin
Latin
soliditas
“firmness, compactness, wholeness”
Old French
Old French
solidité
“firmness, solidity”
Middle English
English
solidite
“firmness; the quality of being solid”
Modern English
English
solidity
“the quality or state of being firm, hard, or stable”
Explore more surprising origins