permissive |
allowing much, often excessive, freedom of behavior; lenient. [2 definitions] |
permit |
to allow the entrance or the presence of. [5 definitions] |
permutation |
the act, process, or result of change; transformation. [2 definitions] |
permute |
to change the order of; alter the sequence of. [2 definitions] |
pernicious |
having a very harmful or fatal effect; injurious, deadly, or destructive. |
pernicious anemia |
a severe anemia in which red blood cells decrease in number and increase in size that is caused largely by a deficiency of vitamin B12. |
pernickety |
variant of persnickety. |
perorate |
to make a long speech or speak bombastically. [2 definitions] |
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] |