Pistachios rhymes with:
ratios, antonio's, antonios, cameos, embryos, patios, portfolio's, portfolios, radio's, radios, ratios, rodeos, stereos, studio's, studios, studios', tokyo's
Pistachios sounds like:
packets, packwood's, pact's, pacts, pagoda's, pagodas, pas-de-deux, pastas, pastes, pastiche, pastiches, pasts, pectic, pesetas, pestka, pests, phagocytes, physicists, piaget's, pickets, pickett's, picts, pistachio, pockets, posits, post's, post-attack, postage, postdates, posts, psychotic, pussycats