<B>thunderflash, </B>noun.<DL COMPACT><DD><B> 1. </B>a loud explosion accompanied by a flash. <DD><B> 2. </B>a tin can, blank artillery shell, or the like, filled with powder, that makes such an explosion. </DL>
<A NAME="thundergodvine">
<B>Thunder God vine,</B><DL COMPACT><DD> a climbing perennial plant of the staff-tree family, imported into the United States from China for the insecticidal property of its roots. </DL>
<A NAME="thunderhead">
<B>thunderhead, </B>noun.<DL COMPACT><DD> one of the very tall, swelling masses of cumulus clouds often appearing before thunderstorms and frequently developing into thunderclouds. </DL>
<A NAME="thundering">
<B>thundering, </B>adjective, adverb.<DL COMPACT><DD><I>adj. </I> <B>1. </B>that thunders; very loud and deep. <BR> <I>Ex. a thundering herd of cattle, (Figurative.) a thundering voice.</I> <DD><B> 2. </B>(Informal, Figurative.) very great or big; immense; too great. <BR> <I>Ex. a thundering lie.</I> <DD><I>adv. </I> (Informal.) very. <BR> <I>Ex. a thundering high price.</I> adv. <B>thunderingly.</B> </DL>
<A NAME="thunderous">
<B>thunderous, </B>adjective.<DL COMPACT><DD><B> 1. </B>producing thunder. <DD><B> 2. </B>(Figurative:) <BR> <I>Ex. The famous actor received a thunderous burst of applause at the end of the play.</I> (SYN) deafening. adv. <B>thunderously.</B> </DL>
<A NAME="thunderpeal">
<B>thunderpeal, </B>noun.<DL COMPACT><DD> a clap of thunder; thunderclap. </DL>
<A NAME="thunderpump">
<B>thunderpump, </B>noun.<DL COMPACT><DD> (U.S.) the bittern. </DL>
<A NAME="thundershower">
<B>thundershower, </B>noun.<DL COMPACT><DD> a shower with thunder and lightning. </DL>
<A NAME="thundersquall">
<B>thundersquall, </B>noun.<DL COMPACT><DD> a squall with thunder and lightning. </DL>
<A NAME="thunderstick">
<B>thunder stick,</B><DL COMPACT><DD><B> 1. </B><B>=bull-roarer.</B> <DD><B> 2. </B>a musket, as supposedly called by the American Indians when they first saw firearms. </DL>
<A NAME="thunderstone">
<B>thunderstone, </B>noun.<DL COMPACT><DD><B> 1. </B>any one of various stones or fossils formerly identified with thunderbolts, such as belemnites and meteorites. <DD><B> 2. </B>(Archaic.) a thunderbolt. </DL>
<A NAME="thunderstorm">
<B>thunderstorm, </B>noun.<DL COMPACT><DD> a storm with thunder and lightning and, usually, heavy rain. </DL>
<B>thunderstroke, </B>noun.<DL COMPACT><DD> a stroke of lightning. </DL>
<A NAME="thunderstruck">
<B>thunderstruck, </B>adjective.<DL COMPACT><DD><B> 1. </B>overcome, as if hit by a thunderbolt; astonished; amazed. <BR> <I>Ex. We were thunderstruck by the news of the war.</I> (SYN) confounded, astounded. <DD><B> 2. </B>(Obsolete.) struck by lightning. </DL>
<A NAME="thundery">
<B>thundery, </B>adjective. =thunderous.</DL>
<A NAME="thundrous">
<B>thundrous, </B>adjective. =thunderous.</DL>
<A NAME="thunk">
<B>thunk, </B>noun, verb.<DL COMPACT><DD><I>noun </I> a flat metallic sound. <BR> <I>Ex. ... the satisfying thunk of a metal pellet embedding itself in a hollow plastic object (Punch).</I> <DD><I>v.i. </I> to make such a sound. <BR> <I>Ex. The [car] seats are soft and the doors thunk (Time).</I> </DL>
<A NAME="thur">
<B>Thur.,</B><DL COMPACT><DD> Thursday. </DL>
<A NAME="thurible">
<B>thurible, </B>noun. =censer.</DL>
<A NAME="thurifer">
<B>thurifer, </B>noun.<DL COMPACT><DD> an altar boy or acolyte who carries the censer. </DL>
<A NAME="thurify">
<B>thurify, </B>transitive verb, <B>-fied,</B> <B>-fying.</B><DL COMPACT><DD> to burn incense before or about; perfume with incense; cense. </DL>
<A NAME="thuringer">
<B>Thuringer, </B>noun.<DL COMPACT><DD> a kind of mildly seasoned dry sausage. </DL>
<A NAME="thuringian">
<B>Thuringian, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of or having to do with Thuringia, a region in southern Germany, or its people. <DD><B> 2. </B>(Geology.) of or having to do with the upper division of the Permian in Europe. <DD><I>noun </I> <B>1. </B>a native or inhabitant of Thuringia. <DD><B> 2. </B>a member of a Germanic tribe that established a kingdom in central Germany that was conquered by the Franks in the 500's A.D. </DL>
<A NAME="thurs">
<B>Thurs.,</B><DL COMPACT><DD> Thursday. </DL>
<A NAME="thursday">
<B>Thursday, </B>noun.<DL COMPACT><DD> the fifth day of the week, following Wednesday. <BR> <I>Ex. In the United States, Thanksgiving Day is always the fourth Thursday in November.</I> <DL COMPACT><DD> (Abbr:) Thurs., Thur., Thu. </DL>
</DL>
<A NAME="thus">
<B>thus, </B>adverb.<DL COMPACT><DD><B> 1. </B>in this way; in the way just stated or indicated; in the following manner. <BR> <I>Ex. He spoke thus: "Friends, Romans, countrymen."</I> <DD><B> 2. </B>accordingly; consequently; therefore. <BR> <I>Ex. He studied hard; thus he got high marks. Thus we decided that you were wrong.</I> (SYN) hence. <DD><B> 3. </B>to this extent; to this degree; so. <BR> <I>Ex. Yet you can speak thus calmly of unsaying All we have said (Walter C. Smith).</I> <BR><I>expr. <B>thus far,</B> <DD><B> a. </B>until now or then. </I> <I>Ex. Thus far, we haven't heard from him.</I> <DD><B> b. </B>to this or that point. <BR> <I>Ex. Thus far you may go and no farther.</I> </DL>
<A NAME="thusandso">
<B>thus-and-so, </B>noun.<DL COMPACT><DD> any one of several things not named. <BR> <I>Ex. If the local authorities don't do thus-and-so, and at once, they will choke the streets with bigger mobs (Wall Street Journal).</I> </DL>
<A NAME="thusly">
<B>thusly, </B>adverb.<DL COMPACT><DD> (Informal.) thus. <BR> <I>Ex. A Pisa pizza pie peddler we contacted commented thusly: "Balderdash!" (Maclean's).</I> </DL>
<A NAME="thusness">
<B>thusness, </B>noun.<DL COMPACT><DD> (Informal.) the state of being thus. <BR> <I>Ex. What is the reason for this thusness? (Artemus Ward).</I> </DL>
<A NAME="thuswise">
<B>thuswise, </B>adverb. =thus.</DL>
<A NAME="thuya">
<B>thuya, </B>noun. =thuja.</DL>
<A NAME="thwack">
<B>thwack, </B>verb, noun.<DL COMPACT><DD><I>v.t. </I> to strike vigorously with a stick or something flat; whack. <BR> <I>Ex. Take all my cushions down and thwack them soundly (Thomas Middleton).</I> <DD><I>noun </I> a sharp blow with a stick or something flat; whack. <BR> <I>Ex. The man ... with his open palm gave the animal a resounding thwack (Joseph Conrad).</I> noun <B>thwacker.</B> </DL>
<A NAME="thwart">
<B>thwart, </B>verb, noun, adjective, adverb.<DL COMPACT><DD><I>v.t. </I> <B>1. </B>to oppose and defeat; keep from doing something. <BR> <I>Ex. The boy's lack of money thwarted his plans for college.</I> (SYN) baffle, balk, foil. <DD><B> 2. </B>to go against; oppose; hinder. <DD><B> 3. </B>(Obsolete.) to pass or extend across from side to side of; traverse; cross. <DD><I>noun </I> <B>1. </B>a seat across a boat, on which a rower sits. <DD><B> 2. </B>a brace between the gunwales of a canoe. <DD><I>adj. </I> <B>1. </B>lying or passing across. <DD><B> 2. </B>obstinate; stubborn. <DD><I>adv. </I> across; crosswise; athwart. noun <B>thwarter.</B> </DL>
<A NAME="thy">
<B>thy, </B>adjective. Possessive form of <B>thou.</B><DL COMPACT><DD> (Archaic.) your. <BR> <I>Ex. Thy kingdom come. Thy will be done (Matthew 6:10).</I> </DL>
<A NAME="thyestean">
<B>Thyestean, </B>adjective.<DL COMPACT><DD> of or having to do with Thyestes. </DL>
<A NAME="thyesteanbanquet">
<B>Thyestean banquet</B> or <B>meal,</B><DL COMPACT><DD> a repast at which human flesh is served; cannibal feast. </DL>
<A NAME="thyestes">
<B>Thyestes, </B>noun.<DL COMPACT><DD> (Greek Legend.) a son of Pelops, brother of Atreus, and father of Aegisthus. When Thyestes seduced Atreus' wife and plotted his murder, Atreus pretended reconciliation, but killed three sons of Thyestes and served them to him at a banquet. </DL>
<A NAME="thylacine">
<B>thylacine, </B>noun.<DL COMPACT><DD> a doglike, carnivorous, marsupial mammal of Tasmania, now almost extinct; Tasmanian wolf. Thylacines are grayish or yellowish brown with dark brown stripes on their backs. </DL>
<A NAME="thylakoid">
<B>thylakoid, </B>noun.<DL COMPACT><DD> a saclike membrane that is the structural unit of the grana in the chloroplasts of plant cells and the site of chemical reactions essential in photosynthesis. </DL>
<A NAME="thyme">
<B>thyme, </B>noun.<DL COMPACT><DD> any one of a group of herbs with fragrant, aromatic leaves that smell like mint. Thyme belongs to a genus of the mint family. The sweet-smelling leaves of the common garden thyme are used for seasoning. The common wild thyme is a creeping evergreen. </DL>
<A NAME="thymectomize">
<B>thymectomize, </B>transitive verb, <B>-mized,</B> <B>-mizing.</B><DL COMPACT><DD> to subject to thymectomy. </DL>
<A NAME="thymectomy">
<B>thymectomy, </B>noun, pl. <B>-mies.</B><DL COMPACT><DD> the surgical removal of the thymus gland. </DL>
<A NAME="thymelaeaceous">
<B>thymelaeaceous, </B>adjective.<DL COMPACT><DD> belonging to the mezereum family of trees and shrubs. </DL>
<A NAME="thymic">
<B>thymic</B> (1), adjective.<DL COMPACT><DD> having to do with or derived from thyme. </DL>
<A NAME="thymic">
<B>thymic</B> (2), adjective.<DL COMPACT><DD> of or having to do with the thymus gland. </DL>
<A NAME="thymicacid">
<B>thymic acid,</B> =thymol.</DL>
<A NAME="thymidine">
<B>thymidine, </B>noun.<DL COMPACT><DD> a nucleoside of thymine occurring in DNA that stimulates growth in cells. </DL>
<A NAME="thymine">
<B>thymine, </B>noun.<DL COMPACT><DD> a substance present in nucleic acid in cells. It is one of the pyrimidine bases of DNA, corresponding to uracil in RNA. (Abbr:) T (no period). </DL>
<A NAME="thymocyte">
<B>thymocyte, </B>noun.<DL COMPACT><DD> a lymphocyte found in the thymus gland. </DL>
<A NAME="thymol">
<B>thymol, </B>noun.<DL COMPACT><DD> an aromatic, white or colorless, crystalline phenol obtained from the volatile oil of thyme and various other plants or made synthetically, used chiefly as an antiseptic. </DL>
<A NAME="thymosin">
<B>thymosin, </B>noun.<DL COMPACT><DD> a hormone of the thymus gland, associated with the production of lymphocytes that cause cellular immunity. <BR> <I>Ex. Thymosin treatment has raised the T-cell count in more than 75 per cent of the cancer patients (Allan L. Goldstein).</I> </DL>
