| ACHROMATISMS | • achromatisms n. Plural of achromatism. • ACHROMATISM n. the state of being achromatic. |
| ARITHMOMANIA | • arithmomania n. An obsessive-compulsive disorder in which the subject feels the need to count things. • ARITHMOMANIA n. an obsession with numbers, esp. compulsion to count things. |
| ARITHMOMETER | • arithmometer n. (Dated) A calculating machine. • ARITHMOMETER n. (obsolete) an early adding machine. |
| AUTOMORPHISM | • automorphism n. (Algebra) An isomorphism of a mathematical object or system of objects onto itself. • automorphism n. The ascription to others of one’s own characteristics. • AUTOMORPHISM n. ascription to others of one's own characteristics. |
| CHROMATICISM | • chromaticism n. The quality or state of being chromatic. • chromaticism n. The act or action of chromaticizing: the use of chromatic notes or tones (contrasted with diatonicism). • CHROMATICISM n. the state of being chromatic; the use of chromatic tones. |
| DICHROMATISM | • dichromatism n. The condition of being dichromatic. • dichromatism n. (Pathology) A form of colourblindness in which only two of the three primary colours can be distinguished. • dichromatism n. (Biology) The condition when male and female birds have different plumage colors. |
| HARMONIUMIST | • harmoniumist n. Someone who plays a harmonium. • HARMONIUMIST n. one who plays the harmonium. |
| HIEROGRAMMAT | • HIEROGRAMMAT n. a writer of sacred records, also HIEROGRAMMATE. |
| METACHRONISM | • metachronism n. An error in chronological ordering in which a character or an event is placed at too late a time. • METACHRONISM n. an error of dating an event too late. |
| METAMORPHISM | • metamorphism n. (Geology) The process by which rocks are changed into other forms by the application of heat and/or pressure. • metamorphism n. (Zoology) The process by which insects develop through life stages, for example, those of embryo, larva… • metamorphism n. (By extension) Any dramatic change from one thing to another. |
| METAMORPHIST | • metamorphist n. (Theology) One who believes that the body of Christ was merged into God when he ascended. • METAMORPHIST n. a person who believes that Christ's body merged into the Deity at the Ascension. |
| NORMOTHERMIA | • normothermia n. (Medicine) The condition of having a normal body temperature. • NORMOTHERMIA n. normal body temperature. |
| PROTHALAMIUM | • prothalamium n. Alternative form of prothalamion. • PROTHALAMIUM n. (Spenser) a song in honour of a marriage, also PROTHALAMION. |