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Polychaeta
n. pl.
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One of the two principal groups of Chaetopoda. It includes those that have prominent parapodia and fascicles of setae. See Illust. under Parapodia.
Polychloride
n.
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A chloride containing more than one atom of chlorine in the molecule.
Polychoerany
n.
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A government by many chiefs, princes, or rules.
Polychord
a.
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Having many strings.
Polychord
n.
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A musical instrument of ten strings.
Polychord
n.
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An apparatus for coupling two octave notes, capable of being attached to a keyed instrument.
Polychrest
n.
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A medicine that serves for many uses, or that cures many diseases.
Polychroism
n.
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Same as Pleochroism.
Polychroite
n.
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The coloring matter of saffron; -- formerly so called because of the change of color on treatment with certain acids; -- called also crocin, and safranin.
Polychromate
n.
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A salt of a polychromic acid.
Polychromate
n.
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A compound which exhibits, or from which may be prepared, a variety of colors, as certain solutions derived from vegetables, which display colors by fluorescence.
Polychromatic
a.
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Showing a variety, or a change, of colors.
Polychrome
n.
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Esculin; -- so called in allusion to its fluorescent solutions.
Polychrome
a.
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Executed in the manner of polychromy; as, polychrome printing.
Polychromic
a.
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Polychromatic.
Polychromic
a.
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Pertaining to, or designating, any one of several acids (known only in their salts) which contain more than one atom of chromium.
Polychromous
a.
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Of or pertaining to polychromy; many-colored; polychromatic.
Polychromy
n.
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The art or practice of combining different colors, especially brilliant ones, in an artistic way.
Polychronious
a.
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Enduring through a long time; chronic.
Polyclinic
n.
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A clinic in which diseases of many sorts are treated; especially, an institution in which clinical instruction is given in all kinds of disease.
Polyconic
a.
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Pertaining to, or based upon, many cones.
Polycotyledon
n.
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A plant that has many, or more than two, cotyledons in the seed.
Polycotyledonary
a.
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Having the villi of the placenta collected into definite patches, or cotyledons.
Polycracy
n.
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Government by many rulers; polyarchy.
Polycrotic
a.
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Of or pertaining to polycrotism; manifesting polycrotism; as, a polycrotic pulse; a polycrotic pulse curve.
Polycrotism
n.
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That state or condition of the pulse in which the pulse curve, or sphygmogram, shows several secondary crests or elevations; -- contrasted with monocrotism and dicrotism.
Polycystid
n.
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One of the Polycystidea.
Polycystid
n.
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One of the Polycystina.
Polycystid
a.
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Pertaining to the Polycystidea, or the Polycystina.
Polycystidea
n. pl.
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A division of Gregarinae including those that have two or more internal divisions of the body.