psi

¹psi

noun \ˈsī, ˈpsī\

Definition of PSI

: the 23d letter of the Greek alphabet — see alphabet table

Origin of PSI

Middle English, from Medieval Latin, from Late Greek, from Greek psei

First Known Use: 15th century

Rhymes with PSI

ay, aye, bi, Bligh, buy, by, bye, chai, chi, cry, die, dry, dye, eye, fie, fly, fry, guy, hie, high, Huai, i, I, lie, lye, my, nigh, phi, pi, pie, ply, pry, rye, scythe, shy, sigh, sky, Skye, sly, spry, spy, sty, Tai, Thai, thigh, thy, tie, try, vie, why, wry, wye, xi, Y