Word:

Parfocal

Par`fo´cal
a.1.(Opt.) With the lower focal points all in the same plane; - said of sets of eyepieces so mounted that they may be interchanged without varying the focus of the instrument (as a microscope or telescope) with which they are used.
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Parergon
Parergy
Pares
Pares curie
Paresis
paresthesia
Parethmoid
Paretic
Pareto
pareve
parfait
parfait glass
Parfay
Parfit
Parfitly
Parfleche
-- Parfocal --
Parforn
Pargasite
Pargeboard
Parget
Pargeter
Pargeting
Pargetory
pargetry
pargetting
parheliacal
Parhelic
parhelic circle
parhelic ring
Parhelion
Parhelium
Pari
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