



In medicine, protection provided by inoculation with an antiserum or with a vaccine.

Low-frequency systems have better penetration than UHF systems.

perambulation (s) (noun), perambulations (pl)
1. A walk around a territory (a parish or manor or forrest etc.) in order to officially assert and record its boundaries.
2. A leisurely walk (usually in some public place).
perflation (s) (noun), perflations (pl)
The act of blowing air into a cavity to expand its walls or to force out secretions or other material.
1. The act of boring or piercing through a part.
2. A hole made through a part or substance.
3. The act of punching a hole; especially, a row of holes as for ease of separation.
4. A line of small holes for tearing at a particular place.
permutation (s) (noun), permutations (pl)
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Go to this Word A Day Revisited Index
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The action of passing or spending the night; especially, in ecclesiastical use, spending the night in prayer; an all-night vigil.
The act of committing a crime.
perpetuation (s) (noun), perpetuations (pl)
1. The act of prolonging something or to cause it to last indefinitely.
2. The act of preserving from extinction through an endless existence or for an indefinite period of time; a continuance.
personation (s) (noun), personations (pl)
1. A situation when a person plays the part of a character in a play or drama.
2. A term which is used in law for the specific kind of voter fraud when an individual chooses candidates in an election while pretending to be another elector who has the right to fill in the ballot.
personification (s) (noun), personifications (pl)
1. The regarding of human characteristics, emotions, and intentions to nonhuman entities or objects: Joe heard someone refer to the sun as "he" and the moon as "she".
2. A creature imagined as representing a thing or an idea: Satan is the personification of evil.