prototonic is a valid English word

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

Meanings

Adjective (NOT COMPARABLE)

(phonetics) Accented on the first syllable.
• Coordinate terms: deuterotonic

prototonic is not a Scrabble valid word

p3r1o1t1o1t1o1n1i1c3

• International English (Sowpods) - The word is not valid in Scrabble ✘
• US English (TWL06) - The word is not valid in Scrabble ✘
• 14 points

prototonic is not an iScramble, QuickWords valid word

p1r2o3t4o5t6o7n8i9c10

• The word is not valid in iScramble ✘
• The word is not valid in QuickWords ✘
• 55 points

Same letters words (Anagrams)

• TOPOTRONIC

Same letters plus one

• PHOTOTRONIC

Same letters minus one

• COPORTION
• NOOTROPIC
• TONOTOPIC