plural of periodic sentence

plural of periodical cicada

(astronomy) A disturbance in the motion of a planet due to its position in its orbit relative to another planet.

plural of periodic inequality

plural of periodic month

Synonym of tropical month

plural of periodic acid

Alternative spelling of quasiperiodic

(accounting) A system of assessing a business' inventory in which updates are made on a periodic basis, so that a completely accurate account is only available immediately after the update.

Alternative spelling of nonperiodic comet