| dendroidal | (adjective) resembling a tree in form and branching structure | Synonyms: arboreal, arboreous, arborescent, arboresque, arboriform, dendriform, dendroid, tree-shaped, treelike |
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| denial | (noun) a defendant's answer or plea denying the truth of the charges against him | Synonyms: defence, defense, demurrer |
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| (noun) renunciation of your own interests in favor of the interests of others | Synonyms: abnegation, self-abnegation, self-denial, self-renunciation |
| (noun) the act of refusing to comply (as with a request) | - |
| (noun) the act of asserting that something alleged is not true | Synonyms: disaffirmation |
| (noun) (psychiatry) a defense mechanism that denies painful thoughts | - |
| denominational | (adjective) adhering or confined to a particular sect or denomination | - |
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| (adjective) relating to or characteristic of a particular religious denomination | - |
| (adjective) relating to the face value of a banknote, coin, or stamp | - |
| dental | (adjective) of or relating to the teeth | - |
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| (adjective) of or relating to dentistry | - |
| (noun) a consonant articulated with the tip of the tongue near the gum ridge | Synonyms: alveolar, alveolar consonant, dental consonant |
| departmental | (adjective) of or relating to a department | - |
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| derivational | (adjective) characterized by inflections indicating a semantic relation between a word and its base | - |
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| dermal | (adjective) of or relating to or located in the dermis | Synonyms: dermic |
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| (adjective) of or relating to a cuticle or cuticula | Synonyms: cuticular, epidermal, epidermic |
| (adjective) relating to or existing on or affecting the skin | Synonyms: cutaneal, cutaneous |
| dermatological | (adjective) of or relating to or practicing dermatology | Synonyms: dermatologic |
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| despisal | (noun) a feeling of scornful hatred | Synonyms: despising |
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| despotical | (adjective) belonging to or having the characteristics of a despot | Synonyms: despotic |
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| detrimental | (adjective) (sometimes followed by `to') causing harm or injury | Synonyms: damaging, prejudicial, prejudicious |
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| developmental | (adjective) of or relating to or constituting development | - |
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| devisal | (noun) the act of devising something | Synonyms: contrivance |
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| devotional | (adjective) relating to worship | - |
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| (noun) a short religious service | - |
| dextral | (adjective) of or on the right | - |
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| (adjective) preferring to use right foot or hand or eye | - |
| dextrorsal | (adjective) spiraling upward from left to right | Synonyms: dextrorse |
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| dhal | (noun) tropical woody herb with showy yellow flowers and flat pods; much cultivated in the tropics | Synonyms: cajan pea, Cajanus cajan, catjang pea, dahl, pigeon-pea plant, pigeon pea, red gram |
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| diabolical | (adjective) extremely evil or cruel; expressive of cruelty or befitting hell | Synonyms: demonic, diabolic, fiendish, hellish, infernal, satanic, unholy |
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| (adjective) showing the cunning or ingenuity or wickedness typical of a devil | Synonyms: devilish, diabolic, mephistophelean, mephistophelian |
| diacritical | (adjective) capable of distinguishing | Synonyms: diacritic |
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| diagonal | (adjective) having an oblique or slanted direction | Synonyms: aslant, aslope, slanted, slanting, sloped, sloping |
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| (adjective) connecting two nonadjacent corners of a plane figure or any two corners of a solid that are not in the same face | - |
| (noun) a punctuation mark (/) used to separate related items of information | Synonyms: separatrix, slash, solidus, stroke, virgule |
| (noun) an oblique line of squares of the same color on a checkerboard | - |
| (noun) (mathematics) a set of entries in a square matrix running diagonally either from the upper left to lower right entry or running from the upper right to lower left entry | - |
| (noun) a line or cut across a fabric that is not at right angles to a side of the fabric | Synonyms: bias |
| (noun) (geometry) a straight line connecting any two vertices of a polygon that are not adjacent | - |
| diagrammatical | (adjective) shown or represented by diagrams | Synonyms: diagrammatic |
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| dial | (noun) the face of a timepiece; graduated to show the hours | - |
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| (noun) a disc on a telephone that is rotated a fixed distance for each number called | Synonyms: telephone dial |
| (noun) the circular graduated indicator on various measuring instruments | - |
| (noun) the control on a radio or television set that is used for tuning | - |
| (verb) choose by means of a dial | - |
| (verb) operate a dial to select a telephone number | - |
| dialectal | (adjective) belonging to or characteristic of a dialect | - |
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| dialectical | (adjective) of or relating to or employing dialectic | Synonyms: dialectic |
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| diametral | (adjective) related to or along a diameter | Synonyms: diametric, diametrical |
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| diametrical | (adjective) related to or along a diameter | Synonyms: diametral, diametric |
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| (adjective) characterized by opposite extremes; completely opposed | Synonyms: diametric, opposite, polar |
| diaphyseal | (adjective) relating to the diaphysis of a bone | Synonyms: diaphysial |
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| diaphysial | (adjective) relating to the diaphysis of a bone | Synonyms: diaphyseal |
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| diarrheal | (adjective) of or relating to diarrhea | Synonyms: diarrheic, diarrhetic, diarrhoeal, diarrhoeic, diarrhoetic |
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| diarrhoeal | (adjective) of or relating to diarrhea | Synonyms: diarrheal, diarrheic, diarrhetic, diarrhoeic, diarrhoetic |
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| dictatorial | (adjective) of or characteristic of a dictator | - |
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| (adjective) expecting unquestioning obedience | Synonyms: authoritarian, overbearing |
| (adjective) characteristic of an absolute ruler or absolute rule; having absolute sovereignty | Synonyms: authoritarian, autocratic, despotic, tyrannic, tyrannical |
| didactical | (adjective) instructive (especially excessively) | Synonyms: didactic |
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| diestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, dioestrous, dioestrual |
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| dietetical | (adjective) of or relating to the diet | Synonyms: dietary, dietetic |
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| differential | (adjective) relating to or showing a difference | - |
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| (adjective) involving or containing one or more derivatives | - |
| (noun) a bevel gear that permits rotation of two shafts at different speeds; used on the rear axle of automobiles to allow wheels to rotate at different speeds on curves | Synonyms: differential gear |
| (noun) a quality that differentiates between similar things | - |
| (noun) the result of mathematical differentiation; the instantaneous change of one quantity relative to another; df(x)/dx | Synonyms: derivative, derived function, differential coefficient, first derivative |
| diflunisal | (noun) nonsteroidal anti-inflammatory (trade name Dolobid) used to treat arthritis and other inflammatory conditions | Synonyms: Dolobid |
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| digital | (adjective) of a circuit or device that represents magnitudes in digits | - |
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| (adjective) relating to or performed with the fingers | - |
| (adjective) displaying numbers rather than scale positions | - |
| diluvial | (adjective) of or connected with a deluge | Synonyms: diluvian |
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| dimensional | (adjective) of or relating to dimensions | - |
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| (adjective) having dimension--the quality or character or stature proper to a person | - |
| dioestrual | (adjective) (of animals that have several estrous cycles in one breeding season) in a period of sexual inactivity | Synonyms: diestrous, diestrual, dioestrous |
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| diplomatical | (adjective) using or marked by tact in dealing with sensitive matters or people | Synonyms: diplomatic |
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| directional | (adjective) relating to or indicating directions in space | - |
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| (adjective) relating to direction toward a (nonspatial) goal | - |
| (adjective) showing the way by conducting or leading; imposing direction on | Synonyms: directing, directive, guiding |
| disapproval | (noun) the act of disapproving or condemning | - |
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| (noun) an inclination to withhold approval from some person or group | Synonyms: disfavor, disfavour, dislike |
| (noun) the expression of disapproval | - |
| (noun) a feeling of disliking something or what someone is doing | - |
| disavowal | (noun) denial of any connection with or knowledge of | Synonyms: disclaimer |
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| disbursal | (noun) the act of spending or disbursing money | Synonyms: disbursement, outlay, spending |
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| (noun) amounts paid for goods and services that may be currently tax deductible (as opposed to capital expenditures) | Synonyms: disbursement, expense |
| disciplinal | (adjective) designed to promote discipline | Synonyms: corrective, disciplinary |
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| discoidal | (adjective) having a flat circular shape | Synonyms: disc-shaped, disclike, discoid, disk-shaped, disklike |
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| discretional | (adjective) having or using the ability to act or decide according to your own discretion or judgment | Synonyms: discretionary |
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| disloyal | (adjective) deserting your allegiance or duty to leader or cause or principle | - |
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| (adjective) showing lack of love for your country | Synonyms: unpatriotic |
| dismal | (adjective) causing dejection | Synonyms: blue, dark, dingy, disconsolate, drab, drear, dreary, gloomy, grim, sorry |
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| dismissal | (noun) the termination of someone's employment (leaving them free to depart) | Synonyms: discharge, dismission, firing, liberation, release, sack, sacking |
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| (noun) a judgment disposing of the matter without a trial | Synonyms: judgement of dismissal, judgment of dismissal |
| (noun) official notice that you have been fired from your job | Synonyms: dismission, pink slip |
| (noun) permission to go; the sending away of someone | - |
| dispersal | (noun) the act of dispersing or diffusing something | Synonyms: diffusion, dispersion, dissemination |
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| disposal | (noun) the act or means of getting rid of something | Synonyms: disposition |
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| (noun) a method of tending to or managing the affairs of some group of people (especially the group's business affairs) | Synonyms: administration |
| (noun) a kitchen appliance for disposing of garbage | Synonyms: electric pig, garbage disposal |
| (noun) the power to use something or someone | - |
| disproportional | (adjective) out of proportion | Synonyms: disproportionate |
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| distal | (adjective) situated farthest from point of attachment or origin, as of a limb or bone | - |
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| (adjective) directed away from the midline or mesial plane of the body | - |
| distributional | (adjective) of or relating to spatial distribution | - |
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| diurnal | (adjective) of or belonging to or active during the day | - |
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| (adjective) having a daily cycle or occurring every day | - |
| divisional | (adjective) of or relating to a military division | - |
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| (adjective) serving to divide or marking a division | - |
| (adjective) constituting a division or an aliquot part of the basic monetary unit | Synonyms: fractional |
| doctoral | (adjective) of or relating to a doctor or doctorate | Synonyms: doctorial |
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| doctorial | (adjective) of or relating to a doctor or doctorate | Synonyms: doctoral |
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| doctrinal | (adjective) relating to or involving or preoccupied with doctrine | - |
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| documental | (adjective) relating to or consisting of or derived from documents | Synonyms: documentary |
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| dogmatical | (adjective) characterized by assertion of unproved or unprovable principles | Synonyms: dogmatic |
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| dolichocranial | (adjective) having a relatively long head with a cephalic index of under 75 | Synonyms: dolichocephalic, dolichocranic |
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| dominical | (adjective) of or relating to Sunday as the Lord's Day | - |
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| (adjective) of or relating to or coming from Jesus Christ | - |
| dorsal | (adjective) belonging to or on or near the back or upper surface of an animal or organ or part | - |
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| (adjective) facing away from the axis of an organ or organism | Synonyms: abaxial |
| dorsoventral | (adjective) extending from the back to the belly | - |
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| dossal | (noun) an ornamental hanging of rich fabric hung behind the altar of a church or at the sides of a chancel | Synonyms: dossel |
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| dramaturgical | (adjective) relating to the technical aspects of drama | Synonyms: dramaturgic |
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| dropsical | (adjective) swollen with an excessive accumulation of fluid | Synonyms: edematous |
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| dual | (adjective) consisting of or involving two parts or components usually in pairs | Synonyms: double, duple |
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| (adjective) a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural) | - |
| (adjective) having more than one decidedly dissimilar aspects or qualities | Synonyms: double, three-fold, threefold, treble, two-fold, twofold |
| ducal | (adjective) of or belonging to or suitable for a duke | - |
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| duncical | (adjective) (used informally) stupid | Synonyms: blockheaded, boneheaded, duncish, fatheaded, loggerheaded, thick-skulled, thick, thickheaded, wooden-headed |
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| duodecimal | (adjective) based on twelve | - |
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| (noun) one part in twelve equal parts | Synonyms: one-twelfth, twelfth, twelfth part |
| duodenal | (adjective) in or relating to the duodenum | - |
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| dural | (adjective) of or relating to the dura mater | - |
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| dynamical | (adjective) characterized by action or forcefulness or force of personality | Synonyms: dynamic |
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| dysfunctional | (adjective) impaired in function; especially of a bodily system or organ | - |
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| (adjective) (of a trait or condition) failing to serve an adjustive purpose | Synonyms: nonadaptive |
| dyspneal | (adjective) not breathing or able to breathe except with difficulty | Synonyms: breathless, dyspneic, dyspnoeal, dyspnoeic |
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| dyspnoeal | (adjective) not breathing or able to breathe except with difficulty | Synonyms: breathless, dyspneal, dyspneic, dyspnoeic |
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| ecclesiastical | (adjective) of or associated with a church (especially a Christian Church) | Synonyms: ecclesiastic |
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| ecological | (adjective) of or relating to the science of ecology | Synonyms: bionomic, bionomical, ecologic |
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| (adjective) characterized by the interdependence of living organisms in an environment | Synonyms: ecologic |
| economical | (adjective) of or relating to an economy, the system of production and management of material wealth | Synonyms: economic |
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| (adjective) using the minimum of time or resources necessary for effectiveness | Synonyms: economic |
| (adjective) avoiding waste | Synonyms: frugal, scotch, sparing, stinting |
| ectodermal | (adjective) of or relating to the ectoderm | Synonyms: ectodermic |
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| ecumenical | (adjective) of worldwide scope or applicability | Synonyms: cosmopolitan, general, oecumenical, universal, world-wide, worldwide |
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| (adjective) concerned with promoting unity among churches or religions | Synonyms: ecumenic, oecumenic, oecumenical |
| edental | (adjective) having few if any teeth | Synonyms: edentate, edentulate |
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| editorial | (adjective) of or relating to an article stating opinions or giving perspectives | - |
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| (adjective) relating to or characteristic of an editor | - |
| (noun) an article giving opinions or perspectives | Synonyms: column, newspaper column |
| educational | (adjective) relating to the process of education | - |
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| (adjective) providing knowledge | - |
| effectual | (adjective) producing or capable of producing an intended result or having a striking effect | Synonyms: effective, efficacious |
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| (adjective) having legal efficacy or force | Synonyms: legal, sound |
| egoistical | (adjective) concerned chiefly or only with yourself and your advantage to the exclusion of others | Synonyms: egocentric, egoistic, self-centered, self-centred, self-seeking, self-serving, selfish |
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| egotistical | (adjective) characteristic of false pride; having an exaggerated sense of self-importance | Synonyms: conceited, egotistic, self-conceited, swollen-headed, swollen, vain |
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| (adjective) characteristic of those having an inflated idea of their own importance | Synonyms: egotistic, narcissistic, self-loving |
| electoral | (adjective) of or relating to elections | - |
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| (adjective) relating to or composed of electors | - |
| electrical | (adjective) relating to or concerned with electricity | - |
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| (adjective) using or providing or producing or transmitting or operated by electricity | Synonyms: electric |
| electrochemical | (adjective) of or involving electrochemistry | - |
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| electromechanical | (adjective) of or relating to or involving an electrically operated mechanical device | - |
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| electroneutral | (adjective) having no net electric charge | Synonyms: neutral |
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| elemental | (adjective) relating to or being an element | - |
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| (adjective) relating to severe atmospheric conditions | - |
| (adjective) of or being the essential or basic part | Synonyms: basal, elementary, primary |
| ellipsoidal | (adjective) having the nature or shape of an ellipsoid | Synonyms: ellipsoid, spheroidal |
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| elliptical | (adjective) characterized by extreme economy of expression or omission of superfluous elements | Synonyms: elliptic |
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| (adjective) rounded like an egg | Synonyms: egg-shaped, elliptic, oval-shaped, oval, ovate, oviform, ovoid, prolate |
| emblematical | (adjective) serving as a visible symbol for something abstract | Synonyms: emblematic, symbolic, symbolical |
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