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Perisomata
pl.
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of Perisoma
Perisoma
n.
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Same as Perisome.
Perisome
n.
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The entire covering of an invertebrate animal, as echinoderm or coelenterate; the integument.
Perisperm
n.
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The albumen of a seed, especially that portion which is formed outside of the embryo sac.
Perispheric
a.
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Alt. of Perispherical
Perispherical
a.
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Exactly spherical; globular.
Perispomena
pl.
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of Perispomenon
Perispomenon
n.
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A word which has the circumflex accent on the last syllable.
Perispore
n.
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The outer covering of a spore.
Perissad
a.
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Odd; not even; -- said of elementary substances and of radicals whose valence is not divisible by two without a remainder. Contrasted with artiad.
Perisse
v. i.
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To perish.
Perissodactyl
n.
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One of the Perissodactyla.
Perissodactyla
n. pl.
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A division of ungulate mammals, including those that have an odd number of toes, as the horse, tapir, and rhinoceros; -- opposed to Artiodactyla.
Perissological
a.
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Redundant or excessive in words.
Perissology
n.
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Superfluity of words.
Peristalsis
n.
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Peristaltic contraction or action.
Peristaltic
a.
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Applied to the peculiar wormlike wave motion of the intestines and other similar structures, produced by the successive contraction of the muscular fibers of their walls, forcing their contents onwards; as, peristaltic movement.
Peristeria
n.
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A genus of orchidaceous plants. See Dove plant.
Peristerion
n.
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The herb vervain (Verbena officinalis).
Peristerite
n.
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A variety of albite, whitish and slightly iridescent like a pigeon's neck.
Peristeromorphous
a.
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Like or pertaining to the pigeons or Columbae.
Peristeropodous
a.
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Having pigeonlike feet; -- said of those gallinaceous birds that rest on all four toes, as the curassows and megapods.
Peristole
n.
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Peristaltic action, especially of the intestines.
Peristomata
pl.
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of Peristoma
Peristoma
n.
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Same as Peristome.
Peristome
n.
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The fringe of teeth around the orifice of the capsule of mosses. It consists of 4, 8, 16, 32, or 64 teeth, and may be either single or double.
Peristome
n.
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The lip, or edge of the aperture, of a spiral shell.
Peristome
n.
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The membrane surrounding the mouth of an invertebrate animal.
Peristomial
a.
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Of or pertaining to a peristome.
Peristomium
n.
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Same as Peristome.