Feminine passive participle of parad; something separated, i.e. A kernel -- seed.
see HEBREW parad
H6507. perudah
[מְּרֻדָה] noun feminine grain of seed (?) (properly, si vera lectio, the separated; compare Syriac , , Talmud מְּרִידָא, pebble, berry); — only plural מְּרֻדוֺת Joel 1:17.