IPA: /ˈnjuːmərəsnəs/
KK: /ˈnjuːmərəsnəs/
The condition of having a large number of something.
The numerousness of stars in the sky is truly breathtaking.
Numerousness is formed from "numerous" (from Latin "numerosus", meaning full of numbers) and the suffix "-ness" (meaning the state or quality of). The word "numerousness" refers to the quality of being full of numbers or having many items.
Think of 'numerous' meaning full of numbers, and '-ness' indicating a state. This helps you remember that 'numerousness' refers to the quality of having many.