Third-person singular simple present indicative form of third.(verb)
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Use "thirds" in a sentence
"The first movement's Impressionistic landscape featured a piquant, upward soaring melody with a series of falling thirds from a protagonist oboe, flitting above a feather-bed of sustained string harmonies and bass piano, and punctuated with a walking-like figuration in the piano's treble register, all becoming more urgent toward its close."
"Fold the dough in thirds as if folding a letter, turn it 45 degrees, and again run it through the thickest setting."
"Even if we approved it roughly in thirds, with the best ideas passed this month and the other 2/3 held for more substantive deliberation and analysis, to be passed in each subsequent month."