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pergola an arbor or covered walkway with a roof of vines or other climbing plants trained over trelliswork.
perhaps maybe; possibly.
peri a fairy or elf of Persian mythology that is descended from evil angels and must do penance before being admitted to paradise.
peri- around; about; surrounding.
perianth the outer covering of a flower, including the calyx and corolla.
pericarditis inflammation of the pericardium.
pericardium in vertebrates, the membranous sac enclosing the heart.
pericarp the wall of a ripened ovary or fruit.
Pericles an Athenian statesman and general (495?-429 B.C.).
pericranium the external periosteum covering the outer surface of the skull.
perigee in astronomy, the point in the orbit of a moon or other satellite at which it is closest to the earth. (Cf. apogee.)
perigynous of sepals, petals, and stamens, attached to the edges of a cuplike structure that surrounds the ovary but is not connected to it. (Cf. epigynous, hypogynous.)
perihelion the point in the orbit of a planet or other body at which it comes closest to the sun. (Cf. aphelion.)
peril the condition of being in danger; jeopardy; risk. [3 definitions]
perilous causing or involving great danger; risky; hazardous.
perimeter the boundary or border of a closed, two-dimensional figure or area. [2 definitions]
perineum the area of the body between the thighs, esp. the area between the anus and the vulva in the female and the anus and the scrotum in the male.
period a specific, limited interval or span of time. [8 definitions]
periodic recurring or reappearing at regular intervals of time. [3 definitions]
periodical a publication composed of issues that appear at regular intervals. [3 definitions]
periodicity the tendency to recur at regular intervals. [2 definitions]