pulmotorAn apparatus for producing artificial respiration by pumping oxygen and/or air into and out of the lungs, as of a person who has been asphyxiated by drowning, breathing poisonous gases, etc.
pulsus bisferiensA sign where, on palpation of the pulse, a double peak per cardiac cycle can be appreciated.
PyrrhonismThe system of skeptical philosophy established by Pyrrho of Elis, centred on the idea that nothing can be known for certain; widespread skepticism, universal doubt.
quaereTo ask or query; used imperatively to introduce a question or signify doubt.
quantivalenceSynonym of valence (“the combining capacity of an atom, functional group, or radical determined by the number of atoms of hydrogen with which it will unite, or the number of electrons that it will gain, lose, or share when it combines with other atoms, etc.”).
quartarySynonym of quartarius, quarter-sextarius, a Roman unit of liquid measure equivalent to about 0.14 L
quartationThe act, process, or result (in the process of parting) of alloying a button of nearly pure gold with enough silver to reduce the fineness so as to allow acids to attack and remove all metals except the gold.
quartineA supposed fourth integument of an ovule, counting from the outside.
QuartodecimanAny of a group of early Christians (especially in Asia Minor, Syria, and Jerusalem) who observed Pascha (Christian Passover or Easter) on Nisan 14 of the Hebrew calendar, the day Jesus was crucified according to the Gospel of John, and the day before the beginning of Jewish Passover (also called the Feast of Unleavened Bread (מַצּוֹת (matsót)), which began on Nisan 15.