The word cauterization is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 27
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (62 words)
aconite, actuate, arcuate, auction, autocar, azurine, azurite, carinae, cattier, caution, centaur, certain, citator, citizen, citrate, citrine, cittern, cornett, counter, curtain, cutrate, czarina, enactor, erotica, iconize, inciter, inertia, ionizer, nattier, nautica, nictate, nitrate, nitrite, nittier, nuttier, otarine, outearn, outrace, outrant, outrate, rainout, recount, ricotta, routine, tantric, taunter, teacart, tetanic, tintier, titanic, trounce, tuition, tzarina, uncrate, unitize, urazine, urinate, zacaton, zincate, zincier, zincite, zittern