<B>derivational, </B>adjective.<DL COMPACT><DD> having to do with derivation. </DL>
<A NAME="derivationist">
<B>derivationist, </B>noun.<DL COMPACT><DD> a person who holds the theory of derivation or evolution of organic types; evolutionist. </DL>
<A NAME="derivative">
<B>derivative, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> <B>1. </B>not original; derived. <BR> <I>Ex. derivative poetry.</I> <DD><B> 2. </B>of derivation; derivational. <DD><I>noun </I> <B>1. </B>something derived. <BR> <I>Ex. Many medicines are derivatives of roots and herbs. They spoke a derivative of the Malay language (Harper's).</I> <DD><B> 2. </B>a word formed by adding a prefix or suffix to another word. <I>Quickness</I> and <I>quickly</I> are derivatives of <I>quick.</I> <DD><B> 3. </B>a chemical substance obtained from another by modification or by partial substitution of components. <BR> <I>Ex. Acetic acid is a derivative of alcohol.</I> <DD><B> 4. </B>(Mathematics.) <DD><B> a. </B>the instantaneous rate of change of a function with respect to its variable. <DD><B> b. </B>a function derived from another in differential calculus; differential coefficient. <DD><B> 5. </B>an investment which is a contract having a value derived from the performance of some financial market such as the stock, currency, or bond markets. <BR> <I>Ex. Derivatives allow users to profit--or lose money--from gains or losses in assets like stocks, bonds or currencies, without actually owning those assets (Saul Hansell).</I> adv. <B>derivatively.</B> noun <B>derivativeness.</B> </DL>
<A NAME="derive">
<B>derive, </B>verb, <B>-rived,</B> <B>-riving.</B><DL COMPACT><DD><I>v.t. </I> <B>1. </B>to obtain from a source or origin; get; receive. <BR> <I>Ex. He derives much pleasure from reading adventure stories.</I> <DD><B> 2. </B>to trace (a word, custom, or title) from or to a source or origin. <BR> <I>Ex. The word "December" is derived from the Latin word "decem," which means "ten."</I> <DD><B> 3. </B>to obtain by reasoning; deduce. <DD><B> 4. </B>to obtain (a chemical substance) from another by substituting a different element. <DD><B> 5. </B>(Obsolete.) to lead; bring; direct. <DD><I>v.i. </I> to come from a source or origin; originate. <BR> <I>Ex. This story derives from an old legend.</I> noun <B>deriver.</B> </DL>
<A NAME="derived">
<B>derived, </B>adjective.<DL COMPACT><DD> drawn, obtained, or originating from a source; not original or native. <BR> <I>Ex. On the other hand, many of the derived races may not genetically be the result of mixture, but rather the product of special types of genetic adaptation (Beals and Hoijer).</I> <DL COMPACT><DD> (Abbr:) der. </DL>
</DL>
<A NAME="derivedprotein">
<B>derived protein,</B> =proteose.</DL>
<A NAME="derivedunit">
<B>derived unit,</B><DL COMPACT><DD> (Physics.) any unit which is a derivative of one or more primary units, such as of mass, length, or time. </DL>
<A NAME="derm">
<B>derm, </B>noun. =dermis.</DL>
<A NAME="derma">
<B>derma</B> (1), noun. =dermis.</DL>
<A NAME="derma">
<B>derma</B> (2), noun.<DL COMPACT><DD> a casing of beef stuffed with a spicy flour mixture and roasted; kishke. </DL>
<A NAME="dermabrasion">
<B>dermabrasion, </B>noun.<DL COMPACT><DD> the removal of epidermis by freezing and applying a high-speed, motor-driven wire brush, used especially on scars. </DL>
<A NAME="dermal">
<B>dermal, </B>adjective.<DL COMPACT><DD> of the skin; dermic. </DL>
<A NAME="dermapteran">
<B>dermapteran, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> of or belonging to the order of insects comprising the earwigs. <DD><I>noun </I> <B>=earwig.</B> </DL>
<A NAME="dermat">
<B>dermat-</B> or <B>dermato-,</B><DL COMPACT><DD> (combining form.) of the skin. <BR> <I>Ex. Dermatotherapy = treatment of the skin.</I> </DL>
<A NAME="dermatic">
<B>dermatic, </B>adjective.<DL COMPACT><DD> of or having to do with the skin; dermal. </DL>
<A NAME="dermatitis">
<B>dermatitis, </B>noun.<DL COMPACT><DD> inflammation of the skin. </DL>
<A NAME="dermatogen">
<B>dermatogen, </B>noun.<DL COMPACT><DD> (Botany.) a thin layer of growing tissue from which the epidermis is developed. </DL>
<A NAME="dermatoglyphics">
<B>dermatoglyphics, </B>noun.<DL COMPACT><DD><B> 1. </B>the pattern of lines in the palm of the hand, or the sole of the foot. <DD><B> 2. </B>the study of these patterns, especially in infants, to detect disease or abnormality. </DL>
<A NAME="dermatography">
<B>dermatography, </B>noun.<DL COMPACT><DD> the anatomical description of the skin. </DL>
<B>dermatological, </B>adjective.<DL COMPACT><DD> of or having to do with dermatology. adv. <B>dermatologically.</B> </DL>
<A NAME="dermatologist">
<B>dermatologist, </B>noun.<DL COMPACT><DD> a person who studies dermatology and usually practices medicine treating the skin and its diseases. </DL>
<A NAME="dermatology">
<B>dermatology, </B>noun.<DL COMPACT><DD> the branch of medicine that deals with the skin, its structure, and its diseases. </DL>
<A NAME="dermatome">
<B>dermatome, </B>noun.<DL COMPACT><DD><B> 1. </B>an instrument for cutting skin grafts. <DD><B> 2. </B>(Embryology.) the part of the mesoderm from which the dermis develops. </DL>
<A NAME="dermatomycosis">
<B>dermatomycosis, </B>noun, pl. <B>-ses.</B><DL COMPACT><DD> any fungous disease of the skin, such as ringworm. </DL>
<A NAME="dermatomyositis">
<B>dermatomyositis, </B>noun.<DL COMPACT><DD> a disease marked by inflammation of the muscular tissues and the skin. </DL>
<A NAME="dermatophyte">
<B>dermatophyte, </B>noun.<DL COMPACT><DD> any fungus parasitic on the skin, causing diseases such as athlete's foot or ringworm. </DL>
<A NAME="dermatophytic">
<B>dermatophytic, </B>adjective.<DL COMPACT><DD> of dermatophytes; having to do with or caused by dermatophytes. </DL>
<A NAME="dermatophytosis">
<B>dermatophytosis, </B>noun.<DL COMPACT><DD> a fungous disease of the skin, caused by dermatophytes. </DL>
<A NAME="dermatoplasty">
<B>dermatoplasty, </B>noun.<DL COMPACT><DD> plastic surgery of the skin. </DL>
<A NAME="dermatosis">
<B>dermatosis, </B>noun, pl. <B>-ses.</B><DL COMPACT><DD> any disease of the skin. </DL>
<A NAME="dermatosome">
<B>dermatosome, </B>noun.<DL COMPACT><DD> (Botany.) one of the granular bodies which are thought to form the cell wall of a plant. Dermatosomes occur in rows and are united and surrounded by protoplasm. </DL>
<A NAME="dermatotherapy">
<B>dermatotherapy, </B>noun.<DL COMPACT><DD> treatment of the skin and its diseases. </DL>
<A NAME="dermestid">
<B>dermestid, </B>noun.<DL COMPACT><DD> any one of a group of small beetles whose larvae are especially injurious to dried meats, wool, fur, and other animal matter. </DL>
<B>dermographia, </B>noun.<DL COMPACT><DD> an extremely sensitive or irritable condition of the skin in which lines drawn on it leave a reddish, elevated mark. </DL>
<B>dermopteran, </B>adjective, noun.<DL COMPACT><DD><I>adj. </I> of or belonging to the order of mammals comprising the flying lemurs. <DD><I>noun </I> <B>=flying lemur.</B> </DL>
<A NAME="dermoskeleton">
<B>dermoskeleton, </B>noun.<DL COMPACT><DD> the exoskeleton. </DL>
<A NAME="dern">
<B>dern</B> (1), adjective.<DL COMPACT><DD> (Scottish.) <DD><B> 1. </B>hidden or secret. <BR> <I>Ex. There's not a dern nook, or cove ... that he's not acquainted with (Scott).</I> <DD><B> 2. </B>dark; somber; dreary. </DL>
<A NAME="dern">
<B>dern</B> (2), interjection, adverb.<DL COMPACT><DD> (U.S. Slang.) darn. <BR> <I>Ex. Dern it! (interj.). I dern nigh broke my leg climbing the fence (adv.).</I> </DL>
<B>dernier ressort,</B><DL COMPACT><DD> (French.) the last resort or resource. </DL>
<A NAME="derogate">
<B>derogate, </B>verb, <B>-gated,</B> <B>-gating,</B> adjective.<DL COMPACT><DD><I>v.i. </I> <B>1. </B>to take away a part of something so as to impair it; detract. <BR> <I>Ex. The king felt that summoning a parliament would derogate from his authority.</I> <DD><B> 2. </B>to become worse; degenerate. <DD><I>v.t. </I> <B>1. </B>to take away (something) from a thing so as to impair it. <DD><B> 2. </B>(Obsolete.) to detract from; depreciate. <DD><I>adj. </I> (Rare.) deteriorated; debased. adv. <B>derogately.</B> </DL>
<A NAME="derogation">
<B>derogation, </B>noun.<DL COMPACT><DD><B> 1. </B>a lessening or impairment (of power, law, position, or other status). <BR> <I>Ex. To him, marriage meant only the derogation of his independence.</I> <DD><B> 2. </B>the state of becoming worse; deterioration; debasement. <DD><B> 3. </B>disparagement; detraction. </DL>
<B>derogator, </B>noun.<DL COMPACT><DD> a person who derogates. </DL>
<A NAME="derogatorily">
<B>derogatorily, </B>adverb.<DL COMPACT><DD> in a derogatory manner. </DL>
<A NAME="derogatoriness">
<B>derogatoriness, </B>noun.<DL COMPACT><DD> the quality of being derogatory. </DL>
<A NAME="derogatory">
<B>derogatory, </B>adjective.<DL COMPACT><DD><B> 1. </B>showing an unfavorable opinion of some person or thing; disparaging; belittling. <BR> <I>Ex. The stranger's derogatory remarks about the town and its people made him unpopular.</I> <DD><B> 2. </B>lessening the value; detracting. </DL>
<A NAME="derrick">
<B>derrick, </B>noun, verb.<DL COMPACT><DD><I>noun </I> <B>1. </B>a machine for lifting and moving heavy objects. A derrick has a long arm that swings at an angle from the base of an upright post or frame. <DD><B> 2. </B>a towerlike framework over an oil well that holds the drilling and hoisting machinery. <DD><I>v.t. </I> <B>1. </B>to lift or move by or as if by derrick. <DD><B> 2. </B>(U.S. Slang.) to remove (a pitcher) from a ball game. </DL>
<A NAME="derriere">
<B>derriere, </B>noun.<DL COMPACT><DD> the rump; buttocks. </DL>