| AERONOMIST | • aeronomist n. One who studies aeronomy. • AERONOMIST n. one who studies aeronomy, the science of the earth's atmosphere, also AERONOMER. |
| AGRONOMIST | • agronomist n. A scientist whose speciality is agronomy. • AGRONOMIST n. one versed in agronomy; a student of agronomy. |
| AUTONOMIST | • autonomist n. An advocate of autonomy or autonomism. • AUTONOMIST n. one who practises autonomy. |
| BIOCHEMIST | • biochemist n. A chemist whose speciality is biochemistry. • BIOCHEMIST n. a chemist specialising in the chemistry of living things. |
| CONFORMIST | • conformist n. Someone who tries to conform to the mainstream. • conformist n. A noctuid moth (Lithophane furcifera). • conformist adj. Conforming to established customs, etc. |
| ERGONOMIST | • ergonomist n. An expert in ergonomics. • ERGONOMIST n. one who engages in ergonomics, the study of people at work. |
| EURYTHMIST | • EURYTHMIST n. a person who teaches or practises eurhythmics, also EURHYTHMIST. |
| GEOCHEMIST | • geochemist n. (Chemistry, geology) A chemist or geologist who specializes in geochemistry. • GEOCHEMIST n. one who studies the chemistry of the earth's crust. |
| LEGITIMIST | • legitimist n. (Historical) A French royalist who believes that the King of France and Navarre must be chosen according… • legitimist n. A Carlist. • legitimist n. (By extension) Any proponent for the rule of a legitimate sovereign. |
| MISOGAMIST | • misogamist n. A person with a dislike or hatred of marriage. • MISOGAMIST n. one who hates marriage. |
| MONOGAMIST | • monogamist n. A person who practices monogamy. • MONOGAMIST n. one who practices or upholds monogamy. |
| POLYGAMIST | • polygamist n. One who practices polygamy, or maintains that it is lawful. • POLYGAMIST n. one who practises polygamy. |
| PROBLEMIST | • problemist n. (Chess) One who composes chess problems for other players to attempt to solve. • PROBLEMIST n. one who sets problems. |
| SYNONYMIST | • synonymist n. A person who studies synonyms. • SYNONYMIST n. a student of synonyms. |
| TAXONOMIST | • taxonomist n. (Taxonomy) Someone whose profession is taxonomy, or who performs taxonomy at a professional level. • TAXONOMIST n. a specialist in taxonomy, also TAXONOMER. |
| TENOTOMIST | • tenotomist n. One who carries out a tenotomy. • TENOTOMIST n. one who surgically cuts tendons. |
| TOPONYMIST | • toponymist n. One who studies toponymy. • TOPONYMIST n. one who studies toponymy, the study of place-names. |
| XYLOTOMIST | • xylotomist n. A person involved in xylotomy. • XYLOTOMIST n. one who carries out xylotomy, the preparation of sections of wood for microscopic examination. |