<B>pneuma, </B>noun.<DL COMPACT><DD> spirit or soul. </DL>
<A NAME="pneumatic">
<B>pneumatic, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>filled with air; containing air, especially air under pressure. <BR> <I>Ex. a pneumatic tire.</I> <DD><B> 2. </B>worked by air, especially air under pressure. <BR> <I>Ex. a pneumatic drill.</I> <DD><B> 3. </B>having to do with air and other gases. <DD><B> 4. </B>containing or connected with air cavities, as the bones of birds or the swim bladder of fishes. <DD><B> 5. </B>(Theology.) of or having to do with the spirit; spiritual. <DD><I>noun </I> a pneumatic tire. adv. <B>pneumatically.</B> </DL>
<A NAME="pneumaticity">
<B>pneumaticity, </B>noun.<DL COMPACT><DD> the fact or condition of being pneumatic. </DL>
<A NAME="pneumatics">
<B>pneumatics, </B>noun.<DL COMPACT><DD> the branch of physics that deals with the pressure, elasticity, weight, and other mechanical properties of air and other gases; pneumodynamics. </DL>
<A NAME="pneumatictube">
<B>pneumatic tube,</B><DL COMPACT><DD> a tube through which notes, letters, or sales slips and cash are sent by means of air pressure. </DL>
<A NAME="pneumatocyst">
<B>pneumatocyst, </B>noun.<DL COMPACT><DD> an air sac, as in a hydrozoan. </DL>
<A NAME="pneumatology">
<B>pneumatology, </B>noun.<DL COMPACT><DD><B> 1. </B>(Theology.) the doctrine of the Holy Spirit. <DD><B> 2. </B>the doctrine of spirits or spiritual beings, in the 1600's considered a branch of metaphysics. <DD><B> 3. </B><B>=pneumatics.</B> <DD><B> 4. </B>(Obsolete.) psychology. </DL>
<A NAME="pneumatolysis">
<B>pneumatolysis, </B>noun.<DL COMPACT><DD> (Geology.) the process by which minerals and ores are formed by the action of vapors given off from igneous magmas. </DL>
<A NAME="pneumatolytic">
<B>pneumatolytic, </B>adjective.<DL COMPACT><DD> (Geology.) of, having to do with, or formed by pneumatolysis. </DL>
<A NAME="pneumatometer">
<B>pneumatometer, </B>noun.<DL COMPACT><DD> an instrument for measuring the amount of air breathed in and out at each inspiration or expiration, or the force of inspiration or expiration. </DL>
<A NAME="pneumatophore">
<B>pneumatophore, </B>noun.<DL COMPACT><DD><B> 1. </B>a structure supposed to serve as a channel for air, arising from the roots of various trees that grow in swampy places in the tropics. <DD><B> 2. </B>a hollow structure containing gas in certain hydrozoans, serving as a float. </DL>
<A NAME="pneumectomy">
<B>pneumectomy, </B>noun, pl. <B>-mies.</B><DL COMPACT><DD> the surgical removal of part of a lung. </DL>
<A NAME="pneumobacillus">
<B>pneumobacillus, </B>noun, pl. <B>-cilli.</B><DL COMPACT><DD> a bacillus commonly present in cases of pneumonia, pleurisy, and other diseases of the lungs, but considered almost certainly not the causative agent of the disease. </DL>
<A NAME="pneumococcal">
<B>pneumococcal, </B>adjective.<DL COMPACT><DD> having to do with or caused by a pneumococcus. </DL>
<B>pneumococcus, </B>noun, pl. <B>-cocci.</B><DL COMPACT><DD> the bacterium that causes lobar pneumonia. </DL>
<A NAME="pneumoconiosis">
<B>pneumoconiosis, </B>noun.<DL COMPACT><DD> chronic inflammation of the lungs, produced by the inhalation of mineral dust; black lung. Also, <B>pneumonoconiosis.</B> </DL>
<A NAME="pneumocystis">
<B>pneumocystis, </B>noun.<DL COMPACT><DD> a virulent form of pneumonia caused by a parasitic organism. </DL>
<B>pneumogastric, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of or having to do with the lungs and the stomach or abdomen. <DD><B> 2. </B>of or having to do with a vagus nerve. <DD><I>noun </I> <B>=vagus nerve.</B> </DL>
<A NAME="pneumogastricnerve">
<B>pneumogastric nerve,</B><DL COMPACT><DD> either of the vagus nerves. </DL>
<A NAME="pneumograph">
<B>pneumograph, </B>noun.<DL COMPACT><DD> an instrument for automatically recording the movements of the human chest in respiration. </DL>
<A NAME="pneumography">
<B>pneumography, </B>noun.<DL COMPACT><DD><B> 1. </B>the recording of respiratory movement, especially by a pneumograph. <DD><B> 2. </B>a method of X-raying tissues by introducing air into them. </DL>
<A NAME="pneumonectomy">
<B>pneumonectomy, </B>noun, pl. <B>-mies.</B><DL COMPACT><DD> the surgical removal of a lung. </DL>
<A NAME="pneumonia">
<B>pneumonia, </B>noun.<DL COMPACT><DD><B> 1. </B>a disease in which the lung or lungs are inflamed. Pneumonia is caused by a bacterium or virus. It is often an acute infection of the lung accompanied by high fever, pain, and a severe cough. Pneumonia in both lungs is called double pneumonia. <DD><B> 2. </B>inflammation of the lung from irritants such as chemicals or foreign particles. </DL>
<A NAME="pneumonic">
<B>pneumonic </B>adjective.<DL COMPACT><DD><B> 1. </B>having to do with, characterized by, or affected with pneumonia. <DD><B> 2. </B>of, having to do with, or affecting the lungs; pulmonary. </DL>
<A NAME="pneumonicplague">
<B>pneumonic plague,</B><DL COMPACT><DD> a usually fatal, contagious disease, characterized by fever, chills, prostration, and infection of the lungs, usually transmitted by a flea that has bitten a rat infected with the plague bacillus. </DL>
<A NAME="pneumonitis">
<B>pneumonitis, </B>noun.<DL COMPACT><DD> any one of various acute inflammations of the lungs; pneumonia. </DL>
<B>pneumonoultramicroscopicsilicovolcanoconiosis, </B>noun.<DL COMPACT><DD> chronic inflammation of the lungs produced by inhaling ultramicroscopic particles of silica. </DL>
<A NAME="pneumostome">
<B>pneumostome, </B>noun.<DL COMPACT><DD> a small opening through which air passes to and from the mantle or respiratory cavity of gastropods. </DL>
<A NAME="pneumothorax">
<B>pneumothorax, </B>noun.<DL COMPACT><DD> the presence of air or gas in the pleural cavity, as produced by the introduction of a needle into the cavity so as to collapse a lung in the treatment of pulmonary tuberculosis (artificial pneumothorax), or as produced by other than outside causes (spontaneous pneumothorax). </DL>
<A NAME="png">
<B>PNG</B> (no periods) or <B>P.N.G.,</B><DL COMPACT><DD> persona non grata. </DL>
<A NAME="pnjunction">
<B>p-n junction,</B><DL COMPACT><DD><B> 1. </B>a junction between a p-type region and an n-type region in a semiconducting crystal. <DD><B> 2. </B>such a crystal, used as a rectifier or in transistors. </DL>
<A NAME="pnxt">
<B>pnxt.,</B><DL COMPACT><DD> pinxit. </DL>
<A NAME="pnya">
<B>PNYA</B> (no periods),<DL COMPACT><DD> Port of New York Authority. </DL>
<A NAME="po">
<B>po.,</B><DL COMPACT><DD> (Baseball.) putout or putouts. </DL>
<B>Po</B> (no period),<DL COMPACT><DD> polonium (chemical element). </DL>
<A NAME="po">
<B>P.O.,</B><DL COMPACT><DD><B> 1. </B>Peninsular and Oriental (Steam Navigation Company). <DD><B> 2. </B>petty officer. <DD><B> 3. </B>pilot officer (in the Royal Air Force). <DD><B> 4. </B>postal order. <DD><B> 5. </B>post office. </DL>
<A NAME="poaceous">
<B>poaceous, </B>adjective.<DL COMPACT><DD> of or belonging to the grass family of plants; gramineous. </DL>
<A NAME="poach">
<B>poach</B> (1), transitive verb.<DL COMPACT><DD><B> 1. </B>to trespass on (another's land), especially to hunt or fish. <BR> <I>Ex. The king's forests were poached by many hungry peasants.</I> <DD><B> 2. </B>to take (game or fish) without any right. <BR> <I>Ex. The tramp poached a chicken from the farmer's henhouse.</I> <DD><B> 3. </B>(Figurative:) <BR> <I>Ex. The rebel stevedores union ... was suspended from the congress for having poached members from the transport union (New York Times).</I> <DD><B> 4. </B>to trample (soft ground) into muddy holes. <DD><B> 5a. </B>to mix with water and reduce to a uniform consistency. <DD><B> b. </B>to mix thoroughly (paper pulp) with the bleach liquor. <DD><I>v.i. </I> <B>1. </B>to trespass on the lands or rights of another, especially to hunt or fish. (SYN) encroach. <DD><B> 2. </B>to take game or fish illegally or by unsportsmanlike means. <DD><B> 3. </B>(of land) to become soft, miry, and full of holes by being trampled. <DD><B> 4. </B>to sink into wet, heavy ground in walking. </DL>
<A NAME="poach">
<B>poach</B> (2), transitive verb.<DL COMPACT><DD><B> 1. </B>to cook (an egg) by breaking it into boiling water. <DD><B> 2. </B>to cook (any of various foods, especially fish) by simmering for a short time in a liquid. </DL>
<A NAME="poacher">
<B>poacher</B> (1), noun.<DL COMPACT><DD> a person who poaches or trespasses, especially to hunt or fish illegally. </DL>
<A NAME="poacher">
<B>poacher</B> (2), noun.<DL COMPACT><DD> a vessel or pan for poaching, as eggs or fish. </DL>
<A NAME="pob">
<B>P.O.B.</B> or <B>POB</B> (no periods),<DL COMPACT><DD> Post Office Box. </DL>
<A NAME="pochard">
<B>pochard, </B>noun, pl. <B>-chards</B> or (collectively) <B>-chard.</B><DL COMPACT><DD><B> 1. </B>a European diving duck that has a reddish-brown head and neck. <DD><B> 2. </B>any one of various related ducks, such as the redhead (American pochard) of North America. </DL>
<A NAME="pochette">
<B>pochette, </B>noun.<DL COMPACT><DD> (French.) a small violin; kit. </DL>
<A NAME="pock">
<B>pock</B> (1), noun, verb.<DL COMPACT><DD><I>noun </I> a pimple, mark, or pit on the skin, caused by smallpox and certain other diseases. <DD><I>v.t. </I> <B>1. </B>to pit, scar, or mark with or as if with pocks. <BR> <I>Ex. The tens of thousands of craters that pock the face of the moon (Scientific American).</I> <DD><B> 2. </B>to scatter over (an area) like pocks. </DL>
<A NAME="pock">
<B>pock</B> (2), noun.<DL COMPACT><DD> (Scottish.) a poke; bag. </DL>
