The word haemodialysis 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: 22
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (58 words)
aidless, aimless, alamode, aldoses, aliased, aliases, amassed, amylase, amyloid, ashamed, assayed, dahlias, dailies, daisies, dalasis, damsels, dayless, dialyse, dismals, dismays, doilies, eomyids, halides, holiday, hyaloid, idolise, iodises, iodisms, isohels, ladyish, lassoed, liaised, liaises, malaise, meiosis, messiah, messily, misdeal, misdial, misdoes, mislaid, mislays, mislead, missaid, missile, myeloid, salamis, samoyed, seamaid, shadily, shields, shoaled, similes, slashed, sloshed, smashed, smileys, someday