<B>theremin, </B>noun.<DL COMPACT><DD> an electronic musical instrument whose sound is produced by two high-frequency electric circuits, the pitch of the tone and the volume depending upon the distance of the player's outstretched hands from two antennas, without touching them. </DL>
<A NAME="thereness">
<B>thereness, </B>noun.<DL COMPACT><DD> the quality of having location, situation, or existence in a particular point or place. <BR> <I>Ex. Giotto was ultimately responsible for the thereness of the figures in Sassetta's painting (Listener).</I> </DL>
<A NAME="thereof">
<B>thereof, </B>adverb.<DL COMPACT><DD><B> 1. </B>of that; of it. <DD><B> 2. </B>from it; from that source. </DL>
<A NAME="thereon">
<B>thereon, </B>adverb.<DL COMPACT><DD><B> 1. </B>on that; on it. <BR> <I>Ex. Before the window was a table. A huge book lay thereon. A swan Swims on a lake, with her double thereon (Thomas Hood).</I> <DD><B> 2. </B>immediately after that; thereupon. <BR> <I>Ex. Moses struck a rock with his staff. Thereon water flowed forth.</I> </DL>
<B>thereover, </B>adverb.<DL COMPACT><DD> (Archaic.) over or above that. </DL>
<A NAME="theres">
<B>there's,<DL COMPACT><DD> 1. </B>there is. <DD><B> 2. </B>there has. </DL>
<A NAME="therethrough">
<B>therethrough, </B>adverb.<DL COMPACT><DD><B> 1. </B>through that, it, or them. <DD><B> 2. </B>by means of that; thereby. </DL>
<A NAME="thereto">
<B>thereto, </B>adverb.<DL COMPACT><DD><B> 1. </B>to that; to it. <BR> <I>Ex. The castle stands on a hill, and the road thereto is steep and rough.</I> <DD><B> 2. </B>in addition to that; besides; also; moreover. <BR> <I>Ex. The king gave his servant rich garments and added thereto a bag of gold.</I> </DL>
<A NAME="theretofore">
<B>theretofore, </B>adverb.<DL COMPACT><DD> before that time; until then. <BR> <I>Ex. Its author was a man I had theretofore known only through references in the writings of others (New Yorker).</I> (SYN) previously. </DL>
<A NAME="thereunder">
<B>thereunder, </B>adverb.<DL COMPACT><DD><B> 1. </B>under that; under it. <DD><B> 2. </B>under the authority of that; according to that. <DD><B> 3. </B>under or less than that (number, age, etc.). </DL>
<A NAME="thereunto">
<B>thereunto, </B>adverb.<DL COMPACT><DD><B> 1. </B>to that; to it. <DD><B> 2. </B>(Obsolete.) in addition to that; thereto. </DL>
<A NAME="thereupon">
<B>thereupon, </B>adverb.<DL COMPACT><DD><B> 1. </B>immediately after that. <BR> <I>Ex. The President appeared. Thereupon the people clapped.</I> <DD><B> 2. </B>because of that; therefore. <BR> <I>Ex. The stolen jewels were found in his room; thereupon he was put in jail.</I> <DD><B> 3. </B>on that; on it. <BR> <I>Ex. The knight carried a shield with a cross painted thereupon.</I> <DD><B> 4. </B>(Archaic.) on that subject or matter. </DL>
<A NAME="therewith">
<B>therewith, </B>adverb.<DL COMPACT><DD><B> 1. </B>with that; with it. <BR> <I>Ex. The lady gave him a rose and a smile therewith.</I> <DD><B> 2. </B>immediately after that; then. <BR> <I>Ex. "Avenge me!" said the ghost and therewith disappeared.</I> <DD><B> 3. </B>besides; withal. <DD><B> 4. </B>against that (or those). </DL>
<A NAME="therewithal">
<B>therewithal, </B>adverb.<DL COMPACT><DD><B> 1. </B>with that; with this; with it. <DD><B> 2. </B>in addition to that; also. </DL>
<A NAME="theriac">
<B>theriac, </B>noun. =theriaca.</DL>
<A NAME="theriaca">
<B>theriaca, </B>noun.<DL COMPACT><DD><B> 1. </B>treacle or molasses. <DD><B> 2. </B>(Obsolete.) an antidote for poisonous bites or for poisons, made up of many ingredients. </DL>
<A NAME="theriacal">
<B>theriacal, </B>adjective.<DL COMPACT><DD> having to do with theriaca; medicinal. </DL>
<A NAME="therianthropic">
<B>therianthropic, </B>adjective.<DL COMPACT><DD><B> 1. </B>part human and part animal, as a mermaid, sphinx, or centaur. <DD><B> 2. </B>of or having to do with a deity or deities combining the form of a beast with that of a man. </DL>
<A NAME="therianthropism">
<B>therianthropism, </B>noun.<DL COMPACT><DD> the worship of therianthropic deities. </DL>
<A NAME="theridiid">
<B>theridiid, </B>noun, adjective.<DL COMPACT><DD><I>noun </I> one of a group of spiders, most of whom spin webs consisting of irregularly intersecting threads. <DD><I>adj. </I> of or belonging to the theridiids. </DL>
<A NAME="theriodont">
<B>theriodont, </B>noun. =therapsid.</DL>
<A NAME="theriomorphic">
<B>theriomorphic, </B>adjective.<DL COMPACT><DD> of or having to do with a deity worshiped in the form of a beast. </DL>
<A NAME="therm">
<B>therm, </B>noun.<DL COMPACT><DD> (Physics.) any one of various units of heat: <DD><B> a. </B>the small calorie. <DD><B> b. </B>the large or great calorie. <DD><B> c. </B>a unit equivalent to 1,000 large calories. <DD><B> d. </B>a unit equivalent to 100,000 British thermal units, used as a basis of charge for gas supplied. Also, <B>therme.</B> </DL>
<A NAME="therm">
<B>therm-,</B><DL COMPACT><DD> (combining form.) the form of <B>thermo-</B> before vowels, as in <I>thermal.</I> </DL>
<B>thermae, </B>noun pl.<DL COMPACT><DD><B> 1a. </B>a public bathing establishment of the ancient Greeks or Romans, originally built over or near a natural hot spring or springs but later using water heated by artificial means. <DD><B> b. </B>the baths of such an establishment. <DD><B> 2. </B>(Obsolete.) hot springs. </DL>
<A NAME="thermal">
<B>thermal, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of or having to do with heat; determined, measured, or operated by heat; thermic. <BR> <I>Ex. The thermal balance of the earth is being upset by the carbon dioxide produced by burning coal and oil and already the concentration has been increased 10 per cent (Science News Letter).</I> <DD><B> 2a. </B>naturally hot or warm. <BR> <I>Ex. a thermal spring.</I> <DD><B> b. </B>of, having to do with, or of the nature of thermae or hot springs. <DD><B> c. </B>having hot springs. <DD><I>noun </I> a rising current of warm air. <BR> <I>Ex. Like gliding, ballooning depends for movement on luck with thermals (New Yorker).</I> adv. <B>thermally.</B> </DL>
<A NAME="thermalbarrier">
<B>thermal barrier,</B> =heat barrier.</DL>
<A NAME="thermalbreeder">
<B>thermal breeder,</B><DL COMPACT><DD> a breeder reactor that uses slow neutrons to produce fissionable material. </DL>
<A NAME="thermalcracking">
<B>thermal cracking,</B><DL COMPACT><DD> the application of steady heat and pressure in petroleum cracking. </DL>
<A NAME="thermalequator">
<B>thermal equator,</B> =heat equator.</DL>
<A NAME="thermalinversion">
<B>thermal inversion,</B><DL COMPACT><DD> an atmospheric condition in which a stationary layer of warm air settles over a layer of cool air near the ground, often causing a heavy concentration of pollutants in the air and mirages of light in the night sky. </DL>
<A NAME="thermalize">
<B>thermalize, </B>transitive verb, <B>-ized,</B> <B>-izing.</B><DL COMPACT><DD> to lower the kinetic energy of (an atom or other particle) until it reaches the energy characteristic of the temperature of a particular medium. noun <B>thermalization.</B> </DL>
<A NAME="thermalnoise">
<B>thermal noise,</B><DL COMPACT><DD> noise generated in a radio receiver or amplifier by the agitation of electrons in a conductor as a result of heat. </DL>
<A NAME="thermalpollution">
<B>thermal pollution,</B><DL COMPACT><DD><B> 1. </B>the discharge of artificially heated water into a natural body of water, causing a rise in natural water's temperature that is harmful to plant and animal life in it; heat pollution; hot water pollution. <DD><B> 2. </B>the discharge of heated gases into the surrounding air, causing a rise in air temperature that sometimes affects local weather conditions; heat pollution; hot water pollution. </DL>
<A NAME="thermalreactor">
<B>thermal reactor,</B> =thermal breeder.</DL>
<A NAME="thermalshock">
<B>thermal shock,</B><DL COMPACT><DD> a drastic change in temperature that affects the composition or properties of some organic and inorganic matter. </DL>
<A NAME="thermalspring">
<B>thermal spring,</B> =hot spring.</DL>
<A NAME="thermalunit">
<B>thermal unit,</B><DL COMPACT><DD> a unit adopted for measuring and comparing quantities of heat. </DL>
<A NAME="thermanesthesia">
<B>thermanesthesia</B> or <B>thermanaesthesia, </B>noun. =thermoanesthesia.</DL>
<A NAME="thermantidote">
<B>thermantidote, </B>noun.<DL COMPACT><DD> a rotating wheellike apparatus, usually enclosed in wet tatties, fixed in a window, and used in India to cool the air. </DL>
<B>thermesthesia</B> or <B>thermaesthesia, </B>noun.<DL COMPACT><DD> (Medicine.) sensitiveness to heat or cold; sensitivity to degree of heat. </DL>
<A NAME="thermic">
<B>thermic, </B>adjective.<DL COMPACT><DD> of or having to do with heat; thermal. adv. <B>thermically.</B> </DL>
<A NAME="thermidor">
<B>Thermidor, </B>noun.<DL COMPACT><DD> the eleventh month of the French Revolutionary Calendar, beginning July 19. </DL>
<A NAME="thermion">
<B>thermion, </B>noun.<DL COMPACT><DD> (Physics.) an electrically charged particle, either positive (an ion) or negative (an electron), given off by a heated body. </DL>
