<B>dense, </B>adjective, <B>denser,</B> <B>densest.</B><DL COMPACT><DD><B> 1. </B>closely packed together; thick. <BR> <I>Ex. a dense forest, a dense fog. Dense patches of briers are difficult to walk through.</I> (SYN) compact, close. <DD><B> 2. </B>(Figurative.) very great; intense; impenetrable. <BR> <I>Ex. dense ignorance.</I> (SYN) profound. <DD><B> 3. </B>(Figurative.) thick-headed; stupid. <BR> <I>Ex. His dense look showed he did not understand the problem.</I> <DD><B> 4. </B>relatively opaque, with strong contrasts of light and shade. <BR> <I>Ex. a dense photographic negative.</I> adv. <B>densely.</B> noun <B>denseness.</B> </DL>
<A NAME="densification">
<B>densification, </B>noun.<DL COMPACT><DD> a densifying or being densified. </DL>
<A NAME="densify">
<B>densify, </B>transitive verb, <B>-fied,</B> <B>-fying.</B><DL COMPACT><DD> to make dense. <BR> <I>Ex. Densified wood, with characteristics of the original board changed by compression, will be another popular item (Wall Street Journal).</I> </DL>
<A NAME="densimeter">
<B>densimeter, </B>noun.<DL COMPACT><DD> an apparatus for measuring the density or specific gravity of a solid or liquid. </DL>
<A NAME="densimetric">
<B>densimetric, </B>adjective.<DL COMPACT><DD> of or by a densimeter. <BR> <I>Ex. a densimetric analysis.</I> adv. <B>densimetrically.</B> </DL>
<A NAME="densimetry">
<B>densimetry, </B>noun.<DL COMPACT><DD> the use of the densimeter, especially in determining the density of samples of gunpowder. </DL>
<A NAME="densitometer">
<B>densitometer, </B>noun.<DL COMPACT><DD><B> 1. </B>an instrument for measuring the density of a photographic negative. <DD><B> 2. </B><B>=densimeter.</B> </DL>
<A NAME="densitometry">
<B>densitometry, </B>noun.<DL COMPACT><DD> the study of the density of photographic negatives. </DL>
<A NAME="density">
<B>density, </B>noun, pl. <B>-ties.</B><DL COMPACT><DD><B> 1. </B>the condition or quality of being dense; having parts very close together; compactness; thickness. <BR> <I>Ex. The density of the forest prevented us from seeing more than a little way ahead.</I> <DD><B> 2. </B>the amount of matter to a unit of bulk; the ratio of the mass of a given volume of a substance to that of an equal volume of a standard substance. Water is the standard for solids and liquids, and hydrogen or air for gases. <BR> <I>Ex. The density of lead is greater than the density of wood.</I> <DD> (Abbr:) D. or d. <DD><B> 3. </B>the quantity of anything per unit area. <BR> <I>Ex. population density.</I> <DD><B> 4. </B>(Figurative.) stupidity. <DD><B> 5. </B>(Photography.) the relative opaqueness of a developed negative. <DD><B> 6. </B>(Electricity.) <DD><B> a. </B>the quantity of electricity per unit of area on a charged surface. <DD><B> b. </B><B>=current density.</B> </DL>
<A NAME="densitycurrent">
<B>density current,</B><DL COMPACT><DD><B> 1. </B>(Physics.) the passage by gravity of a liquid or gas through or around a fluid of slightly different density. <DD><B> 2. </B><B>=turbidity current.</B> </DL>
<A NAME="dent">
<B>dent</B> (1), noun, verb.<DL COMPACT><DD><I>noun </I> <B>1. </B>a hollow made by a blow or pressure. <BR> <I>Ex. The boys threw rocks that made dents in the steel doors. The fall put a dent in my bicycle fender.</I> <DD><B> 2. </B>a weak spot; the start of a break, hole, or cut. <BR> <I>Ex. (Figurative.) The purchase of a new car made a dent in our savings. (Figurative). The rebuke left a dent in the boy's stubborn attitude.</I> <DD><I>v.t. </I> to make a dent in. <BR> <I>Ex. The movers dented the top of the table when they banged it against the doorknob. 125 workers labored 48 hours a week most of the past year trying to dent their backlog (Wall Street Journal).</I> <DD><I>v.i. </I> to become dented. <BR> <I>Ex. Soft wood dents easily. The teakettle dented when it was dropped on the floor.</I> </DL>
<A NAME="dent">
<B>dent</B> (2), noun.<DL COMPACT><DD><B> 1. </B>a toothlike part in a gearwheel, lock, or mechanical device. <DD><B> 2. </B>a notch or indentation. <BR> <I>Ex. High was his comb ... In dents embattled like a castle wall (John Dryden).</I> </DL>
<B>dental, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>of or for the teeth. <BR> <I>Ex. dental cream. Proper dental care can prevent tooth decay.</I> <DD><B> 2. </B>of or for a dentist's work. <BR> <I>Ex. a dental drill.</I> <DD><B> 3. </B>(Phonetics.) (of speech sounds) produced by placing the tip of the tongue against or near the back of the upper front teeth. <DD><I>noun </I> (Phonetics.) a dental sound. "T" and "d" are dentals. adv. <B>dentally.</B> </DL>
<A NAME="dentalfloss">
<B>dental floss,</B><DL COMPACT><DD> a strong, waxed thread for cleaning between the teeth. </DL>
<A NAME="dentalformula">
<B>dental formula,</B><DL COMPACT><DD> a formula or tabular statement of the number and kinds of teeth a mammal may have. </DL>
<A NAME="dentalhygiene">
<B>dental hygiene,</B><DL COMPACT><DD> that part of dentistry related to keeping the teeth, gums, and mouth healthy. </DL>
<A NAME="dentalhygienist">
<B>dental hygienist,</B><DL COMPACT><DD> an assistant to a dentist who cleans the teeth and performs routine examinations. </DL>
<A NAME="dentalium">
<B>dentalium, </B>noun, pl. <B>-liums,</B> <B>-lia.</B><DL COMPACT><DD> a tooth shell; scaphopod. <BR> <I>Ex. Dentalium ... shells kept on strings were the money of the Indians on the Pacific coast (Tracy I. Storer).</I> </DL>
<A NAME="dentalization">
<B>dentalization, </B>noun.<DL COMPACT><DD><B> 1. </B>the act of making into a dental sound. <DD><B> 2. </B>a dental sound. </DL>
<A NAME="dentalize">
<B>dentalize, </B>transitive verb, <B>-ized,</B> <B>-izing.</B><DL COMPACT><DD> (Phonetics.) to make into a dental sound. </DL>
<A NAME="dentalpulp">
<B>dental pulp,</B><DL COMPACT><DD> the soft, sensitive substance containing the nerves and blood vessels that fills the cavity of a mature tooth. </DL>
<A NAME="dentaltechnician">
<B>dental technician,</B><DL COMPACT><DD> a person who makes bridges, dentures, crowns, and other restorative devices, to dentists' specifications. </DL>
<A NAME="dentary">
<B>dentary, </B>adjective.<DL COMPACT><DD><B> 1. </B>of or having to do with the teeth; dental. <DD><B> 2. </B>bearing teeth. </DL>
<A NAME="dentarysplenial">
<B>dentary splenial,</B><DL COMPACT><DD> the fused dentary and splenial bones, or a bone which takes the place of those two in forming the jaw. </DL>
<A NAME="dentate">
<B>dentate, </B>adjective.<DL COMPACT><DD> having toothlike projections; toothed; notched. <BR> <I>Ex. a dentate leaf.</I> adv. <B>dentately.</B> </DL>
<A NAME="dentated">
<B>dentated, </B>adjective. =dentate.</DL>
<A NAME="dentation">
<B>dentation, </B>noun.<DL COMPACT><DD><B> 1. </B>dentate condition or form. <DD><B> 2. </B>(Zoology.) one or more toothlike parts or projections. <BR> <I>Ex. the dentation on the wings of a butterfly or moth.</I> </DL>
<A NAME="dentcorn">
<B>dent corn,</B><DL COMPACT><DD> a variety of Indian corn in which the kernels indent on maturing. <BR> <I>Ex. He selected some of the varieties of ... dent corn then commonly grown and planted them together in a field isolated from other corn (Scientific American).</I> </DL>
<A NAME="dentel">
<B>dentel, </B>noun. =dentil.</DL>
<A NAME="dentelated">
<B>dentelated, </B>adjective.<DL COMPACT><DD> having small toothlike markings; finely notched. </DL>
<A NAME="denti">
<B>denti-,</B><DL COMPACT><DD> (combining form.) of a tooth or teeth; dental. <BR> <I>Ex. Dentiform = of the form of a tooth.</I> <DL COMPACT><DD> Also, <B>dento-.</B> </DL>
</DL>
<A NAME="denticare">
<B>denticare, </B>noun.<DL COMPACT><DD> (in Canada) a government-sponsored program of free dental care for children. </DL>
<A NAME="denticle">
<B>denticle, </B>noun.<DL COMPACT><DD><B> 1. </B>a small tooth or toothlike part. <DD><B> 2. </B><B>=dentil.</B> </DL>
<A NAME="denticular">
<B>denticular, </B>adjective.<DL COMPACT><DD><B> 1. </B>having the form of a small tooth. <BR> <I>Ex. ... converted into a gizzard by the development of denticular processes (Francis J. Bell).</I> <DD><B> 2. </B>(Architecture.) having dentils. </DL>
<A NAME="denticulate">
<B>denticulate, </B>adjective.<DL COMPACT><DD><B> 1. </B>finely toothed or notched. <BR> <I>Ex. a denticulate leaf.</I> <DD><B> 2. </B>(Architecture.) having or decorated with dentils. adv. <B>denticulately.</B> </DL>
<B>denticulation, </B>noun.<DL COMPACT><DD><B> 1. </B>denticulate condition or form. <DD><B> 2. </B>a denticle or denticles. </DL>
<A NAME="denticule">
<B>denticule, </B>noun. =dentil.</DL>
<A NAME="dentiform">
<B>dentiform, </B>adjective.<DL COMPACT><DD> of the form of a tooth; tooth-shaped. </DL>
<A NAME="dentifrice">
<B>dentifrice, </B>noun.<DL COMPACT><DD> a paste, powder, or liquid for cleaning the teeth. </DL>
<A NAME="dentigerous">
<B>dentigerous, </B>adjective.<DL COMPACT><DD> bearing teeth; supplied with teeth. </DL>
<A NAME="dentil">
<B>dentil, </B>noun.<DL COMPACT><DD> (Architecture.) one of a series of small, rectangular blocks, arranged like a row of teeth, used as an ornament, as on the molding of a cornice; denticle; denticule. Also, <B>dentel.</B> </DL>
<B>dentilingual, </B>adjective, noun.<DL COMPACT><DD> (Phonetics.) <DD><I>adj. </I> (of speech sounds) produced with the tongue against or near the teeth. <BR> <I>Ex. "Th" in "think" and "then" are dentilingual sounds.</I> <DD><I>noun </I> a dentilingual sound. Also, <B>dentolingual.</B> </DL>
<A NAME="dentin">
<B>dentin, </B>noun.<DL COMPACT><DD> the hard, bony material beneath the enamel of a tooth. It forms the main part of a tooth. </DL>
<A NAME="dentinal">
<B>dentinal, </B>adjective.<DL COMPACT><DD> of or having to do with the dentin. <BR> <I>Ex. Sting rays ... inflict their injuries by means of a dentinal sting that is located on the back surface of the animal's tail (Science News Letter).</I> </DL>
<A NAME="dentinasal">
<B>dentinasal, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> (of certain sounds) dental and nasal, as the consonant <I>n.</I> <DD><I>noun </I> a dentinasal sound. </DL>
<A NAME="dentine">
<B>dentine, </B>noun. =dentin.</DL>
<A NAME="dentiphone">
<B>dentiphone, </B>noun.<DL COMPACT><DD> an instrument held against the teeth to assist hearing by transmitting sound vibrations to the auditory nerve; audiphone. </DL>