| ASTROLOGIST | • astrologist n. One who practices astrology; an astrologer. • ASTROLOGIST n. one who affects to tell fortunes from the stars, also ASTROLOGER. |
| EROTOLOGIST | • erotologist n. One who studies erotology. • EROTOLOGIST n. a student of erotology. |
| FRITHSTOOLS | • frithstools n. Plural of frithstool. • frith␣stools n. Plural of frith stool. • FRITHSTOOL n. a seat in churches near the altar, to which offenders formerly fled for sanctuary. |
| METROLOGIST | • metrologist n. One who studies or practices metrology. • METROLOGIST n. a student of metrology. |
| MONOLATRIST | • monolatrist n. Monolater. • MONOLATRIST n. one who worships one god only out of many believed to exist, also MONOLATER. |
| PATROLOGIST | • patrologist n. A student of patrology. • PATROLOGIST n. one who practises patrology, the study of early Christianity. |
| PETROLOGIST | • petrologist n. A geologist who specializes in petrology. • PETROLOGIST n. a student of petrology, the geological study of rocks. |
| POSTILLATOR | • postillator n. One who postillates; one who expounds the Scriptures verse by verse. • POSTILLATOR n. one who postillates, explains by marginal notes. |
| POSTORBITAL | • postorbital adj. Behind the orbit of the eye. • postorbital n. A postorbital bone or scale. • POSTORBITAL adj. situated behind the eye. |
| PROGLOTTIDS | • proglottids n. Plural of proglottid. • PROGLOTTID n. a segment of a tapeworm, also PROGLOTTIS. |
| PROTOCOLIST | • protocolist n. One who draws up protocols. • PROTOCOLIST n. a registrar or clerk. |
| PROTOSTELIC | • protostelic adj. Of or possessing a protostele. • PROTOSTELIC adj. of or like a protostele. |
| ROTOTILLERS | • rototillers n. Plural of rototiller. • ROTOTILLER n. an implement used to rototill. |
| SITOSTEROLS | • sitosterols n. Plural of sitosterol. • SITOSTEROL n. any of several sterols widespread in plant products. |
| TOLERATIONS | • tolerations n. Plural of toleration. • TOLERATION n. the act or practice of tolerating something. |
| TORTICOLLIS | • torticollis n. A medical condition in which the neck muscles contract, causing the neck to twist or jerk. • TORTICOLLIS n. a condition in which the neck is permanently twisted and head held at an unusual angle. |
| TOTALISATOR | • totalisator n. (UK) the computerised system which runs parimutuel betting, calculating payoff odds, displaying them… • TOTALISATOR n. an automatic betting machine, also TOTALIZATOR. |
| TRIBOLOGIST | • tribologist n. A specialist in tribology. • TRIBOLOGIST n. a student of tribology. |
| TROCTOLITES | • troctolites n. Plural of troctolite. • TROCTOLITE n. a coarse-grained basic igneous rock composed of feldspar speckled with olivine, aka troutstone. |
| TROLLOPIEST | • TROLLOPY adj. like a trollop. |