cardioid is a valid English word

Scrabble validity: valid ( international - Sowpods, US - Twl06 )
iScramble validity: valid
QuickWords validity: valid

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Meanings

Noun (COUNTABLE)

(geometry) An epicycloid with exactly one cusp; the plane curve with polar equation \rho = 1 + \cos\,\theta - approximately heart-shaped Category:en:Curves

Adjective (COMPARABLE)

Having this characteristic shape
(of a microphone) sensitive in front, but not behind or at the sides

cardioid is a Scrabble valid word

• International English (Sowpods) - The word is valid in Scrabble ✓
• US English (TWL06) - The word is valid in Scrabble ✓
• 12 points

cardioid is an iScramble valid word

• The word is valid in iScramble ✓
• 36 points

cardioid is an QuickWords valid word

• The word is valid in QuickWords ✓
• 36 points

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Same letters words (Anagrams)

• CARIDOID
• CIDAROID

Same letters plus one

• CARDIOIDS
• CARIDOIDS
• CIDAROIDS
• DINOCARID
• DISCORDIA
• EOCARDIID
• MORDACIID

Same letters minus one

• ACIDOID
• ACRIDID
• CARDIID
• CIDARID