| peregrine falcon |
a very swift falcon whose survival was seriously endangered by the pesticide DDT in the 195s and 1960s. |
| peremptory |
not permitting refusal or disobedience. [4 definitions] |
| perennial |
lasting throughout the year, for many years, or indefinitely; constant. [4 definitions] |
| perestroika |
(Russian) restructuring or rebuilding; creating a new structure for an existing thing. |
| perfect |
free from mistakes or defects; flawless. [7 definitions] |
| perfectible |
able to become or be made perfect. |
| perfecting press |
a press that prints both sides of a sheet at the same time. |
| perfection |
the state or condition of being without fault or flaw. [3 definitions] |
| perfectionism |
the tendency not to be satisfied with less than perfection. [2 definitions] |
| perfectionist |
one who tends not to be satisfied with less than perfect performance from herself or himself. [3 definitions] |
| perfectly |
in a perfect manner. [2 definitions] |
| perfect number |
a positive integer that is equal to the sum of its divisors, including one but excluding itself. |
| perfecto |
a standard cigar that is thick in the center and tapers at both ends. |
| perfect pitch |
the ability to sing or recognize the pitch of any musical tone heard; absolute pitch. |
| perfervid |
extremely eager; ardent; zealous. |
| perfidious |
purposely disloyal or treacherous; faithless. |
| perfidy |
an act or the practice of conscious, deliberate disloyalty or treachery; breach of faith. |
| perfoliate |
designating a leaf with a base that surrounds the stem, which appears to be growing through or piercing the leaf. |
| perforate |
to make a hole in. [3 definitions] |
| perforation |
a hole or series of small holes, esp. such as is made to cause paper, stamps, or the like to tear more easily. [2 definitions] |
| perforce |
out of necessity; without having a choice. |