n. 1 the property of being rigid and resistant to pressure; 2 the quality of being difficult to do
The marble table top had a hardness we had never seen.
The marble table top had a hardness we had never seen.
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How do scientists measure the hardness of rocks and minerals?
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rigidness; toughness; difficultness;challenge
softness; easiness
2 syllables
hard-ness
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