| ADMINISTRATRIX | • administratrix n. A female administrator. • ADMINISTRATRIX n. a female administrator.
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| APPROXIMATIONS | • approximations n. Plural of approximation. • APPROXIMATION n. the act of drawing together.
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| CIRCUMFLEXIONS | • circumflexions n. Plural of circumflexion. • CIRCUMFLEXION n. a bending round.
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| EXPERIMENTISTS | • experimentists n. Plural of experimentist. • EXPERIMENTIST n. a person who carries out experiments.
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| EXPRESSIONISMS | • expressionisms n. Plural of expressionism. • EXPRESSIONISM n. a theory or practice in art of seeking to depict the subjective emotions and responses that objects and events arouse in the artist.
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| EXTEMPORANEOUS | • extemporaneous adj. With inadequate preparation or without advance thought; offhand. • EXTEMPORANEOUS adj. unpremeditated; esp. of prayer, discourse, composition, etc., also EXTEMPORARY, EXTEMPORE.
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| EXTERMINATIONS | • exterminations n. Plural of extermination. • EXTERMINATION n. the act of exterminating.
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| FLEXITARIANISM | • flexitarianism n. (US) The practice of eating mainly vegetarian food, but making occasional exceptions for social, pragmatic… • FLEXITARIANISM n. a semi-vegetarian diet involving the practice of eating mainly vegetarian food but making occasional exceptions for e.g. social reasons.
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| HYDROXYLAMINES | • hydroxylamines n. Plural of hydroxylamine. • HYDROXYLAMINE n. a colorless odorless nitrogenous base that resembles ammonia in its reactions.
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| INTERSEXUALISM | • intersexualism n. The state of being intersexual. • INTERSEXUALISM n. the state of being intersexual, existing between sexes.
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| MORPHOSYNTAXES | • morphosyntaxes n. Plural of morphosyntax. • MORPHOSYNTAX n. the study of the interaction of morphology and syntax.
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| PNEUMOTHORAXES | • pneumothoraxes n. Plural of pneumothorax. • PNEUMOTHORAX n. accumulation of air or gas in the pleural cavity.
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| PREEXPERIMENTS | • preexperiments n. Plural of preexperiment. | 
| REEXAMINATIONS | • reexaminations n. Plural of reexamination. • reëxaminations n. Plural of reëxamination.
 • re-examinations n. Plural of re-examination.
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| SEROTAXONOMIES | • SEROTAXONOMY n. serological analysis as a source of information for taxonomic classification. | 
| TRANSEXUALISMS | • TRANSEXUALISM n. a strong desire to change sex. | 
| TRANSSEXUALISM | • transsexualism n. Transsexuality; the state of being transsexual. • TRANSSEXUALISM n. the state of being a transsexual.
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| XANTHOCHROISMS | • XANTHOCHROISM n. a condition in which all skin pigments except yellow disappear. | 
| XANTHOCHROMIAS | • XANTHOCHROMIA n. any yellowish discoloration, esp. of the cerebrospinal fluid. |