| ammonal | (noun) Ammonal is an explosive made up of ammonium nitrate and aluminum powder. | - |
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| antiphonal | (noun) bound collection of antiphons | Synonyms: antiphonary |
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| confessional | (noun) a booth where a priest sits to hear confessions | - |
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| constitutional | (noun) a regular walk taken as a form of exercise | - |
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| coronal | (noun) flower arrangement consisting of a circular band of foliage or flowers for ornamental purposes | Synonyms: chaplet, garland, lei, wreath |
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| devotional | (noun) a short religious service | - |
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| diagonal | (noun) a punctuation mark (/) used to separate related items of information | Synonyms: separatrix, slash, solidus, stroke, virgule |
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| (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 | - |
| irrational | (noun) a real number that cannot be expressed as a rational number | Synonyms: irrational number |
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| monal | (noun) brilliantly colored pheasant of southern Asia | Synonyms: monaul |
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| monoclonal | (noun) any of a class of antibodies produced in the laboratory by a single clone of cells or a cell line and consisting of identical antibody molecules | Synonyms: monoclonal antibody |
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| national | (noun) a person who owes allegiance to that nation | Synonyms: subject |
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| paraprofessional | (noun) a trained worker who is not a member of a profession but who assists a professional | - |
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| personal | (noun) a short newspaper article about a particular person or group | - |
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| processional | (noun) religious music used in a procession | Synonyms: prosodion |
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| professional | (noun) a person engaged in one of the learned professions | Synonyms: professional person |
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| (noun) an authority qualified to teach apprentices | Synonyms: master |
| (noun) an athlete who plays for pay | Synonyms: pro |
| proportional | (noun) one of the quantities in a mathematical proportion | - |
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| rational | (noun) an integer or a fraction | Synonyms: rational number |
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| recessional | (noun) a hymn that is sung at the end of a service as the clergy and choir withdraw | - |
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| (noun) the withdrawal of the clergy and choir from the chancel to the vestry at the end of a church service | Synonyms: recession |
| seasonal | (noun) a worker who finds employment only in certain seasons | Synonyms: seasonal worker |
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| sectional | (noun) a piece of furniture made up of sections that can be arranged individually or together | - |
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| semiprofessional | (noun) an athlete who plays for pay on a part-time basis | Synonyms: semipro |
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| veronal | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, diethylmalonylurea |
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