Dictionary Check: rarefaction

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"rarefaction" is a valid word!

Scrabble 16 points

Words with Friends 18 points

noun

a decrease in the density of something

Example: "a sound wave causes periodic rarefactions in its medium"

Antonyms:

📖 Words starting with "r" 📖 Words starting with "ra" 📖 Words containing "ar" 🏅 Letter Scores