| MESMERISMS | • mesmerisms n. Plural of mesmerism. • MESMERISM n. a hypnotic state induced by the operator's imposition of his will on that of the patient. |
| MESOMERISMS | • mesomerisms n. Plural of mesomerism. • MESOMERISM n. in chemistry, resonance, a type of tautomerism. |
| MUMPSIMUSES | • mumpsimuses n. Plural of mumpsimus. • MUMPSIMUS n. an erroneous word or spelling that, through long usage, has become absorbed into the language; an incorrect manuscript reading blindly adhered to by some scholar. |
| SYMMETALISMS | • SYMMETALISM n. a system of coinage in which the unit of currency consists of a particular weight of an alloy of two or more metals, also SYMMETALLISM. |
| COMMENSALISMS | • commensalisms n. Plural of commensalism. • COMMENSALISM n. a relation between two kinds of organisms in which one obtains food or other benefits from the other without damaging or benefiting it. |
| IMMERSIONISMS | • IMMERSIONISM n. the practise of baptism by immersion. |
| MESOMORPHISMS | • MESOMORPHISM n. the state of being mesomorphic. |
| METASOMATISMS | • metasomatisms n. Plural of metasomatism. • METASOMATISM n. metamorphism caused chiefly by introduction of fluids and/or ions. |
| MISSUMMATIONS | • missummations n. Plural of missummation. • MISSUMMATION n. wrong addition. |
| SOMNAMBULISMS | • somnambulisms n. Plural of somnambulism. • SOMNAMBULISM n. an abnormal condition of sleep in which motor acts, such as walking, are performed. |
| SYMMETALLISMS | • SYMMETALLISM n. a system of coinage in which the unit of currency consists of a particular weight of an alloy of two or more metals, also SYMMETALISM. |
| MISMEASUREMENTS | • mismeasurements n. Plural of mismeasurement. • MISMEASUREMENT n. wrong measurement. |