peroration |
the concluding part of a speech in which there is a summing up of the principal points. [2 definitions] |
peroxidase |
any of a group of enzymes that catalyzes the oxidation of various substances by a peroxide. |
peroxide |
hydrogen peroxide. [3 definitions] |
perpendicular |
at or forming a right angle to or with an intersecting line or plane. [7 definitions] |
perpetrate |
to commit or carry out (a crime, act of mischief, or the like). [2 definitions] |
perpetual |
lasting or continuing forever. [4 definitions] |
perpetual motion |
the movement of a hypothetical device which, once put in motion, would operate indefinitely by creating its own energy in excess of that expended. |
perpetuate |
to cause to last or be remembered. |
perpetuity |
the state or quality of being perpetual. [4 definitions] |
perplex |
to puzzle, confuse, or cause uncertainty in the mind of (a person). [2 definitions] |
perplexed |
puzzled, confused, or uncertain. [2 definitions] |
perplexing |
causing difficulty in understanding or in figuring out a solution or a way to proceed. |
perplexity |
the condition of being puzzled, confused, or uncertain. [3 definitions] |
perquisite |
a payment or benefit in addition to the wages or salary associated with a position. [2 definitions] |
pers. |
abbreviation of "person." |
per se |
(Latin) in or by itself or themselves; intrinsically. |
per second per second |
a unit that expresses the rate of change of a rate of change, such as acceleration, which is the rate of change of velocity. |
persecute |
to subject (esp. those belonging to a different political, religious, or racial group) to persistent harassment, punishment, or ill-treatment. [2 definitions] |
persecution |
the act of persecuting, or the condition or fact of being persecuted. [2 definitions] |
Perseid |
any of numerous meteors visible in the night sky around mid-August each year. |
Persephone |
in Greek mythology, the daughter of Demeter and Zeus, carried off by Hades to the underworld and thereafter permitted to spend only half the year back in the world. The myth presents this cycle of loss and return as the origin of the seasons. |