| CATASTROPHIST | • catastrophist adj. Of, having, or being a theory that explains a situation by positing one or more catastrophic events… • catastrophist n. A catastrophist person: a person who subscribes to a catastrophist theory.
 • CATASTROPHIST n. a believer in catastrophism.
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| ORTHOPTERISTS | • orthopterists n. Plural of orthopterist. • ORTHOPTERIST n. a student of insects.
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| OSTEOPATHISTS | • osteopathists n. Plural of osteopathist. • OSTEOPATHIST n. a practitioner of osteopathy, also OSTEOPATH.
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| PARTITIONISTS | • partitionists n. Plural of partitionist. • PARTITIONIST n. an advocate of political partition.
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| PHOTOMETRISTS | • photometrists n. Plural of photometrist. • PHOTOMETRIST n. one who practises photometry, that branch of science which treats of the measurement of the intensity of light.
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| PHOTOSETTINGS | • PHOTOSETTING n. composing (matter) by projecting film from which a printing plate is made. | 
| POSTLITERATES | Sorry, definition not available. | 
| PROSTATITISES | • PROSTATITIS n. inflammation of the prostate gland. | 
| PROSTITUTIONS | • prostitutions n. Plural of prostitution. • PROSTITUTION n. the act or practice of engaging in promiscuous sexual relations esp. for money.
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| PROTESTATIONS | • protestations n. Plural of protestation. • PROTESTATION n. an avowal or solemn declaration.
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| STEREOTYPISTS | • stereotypists n. Plural of stereotypist. • STEREOTYPIST n. one who makes stereotypes.
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| STETHOSCOPIST | • stethoscopist n. One skilled in the use of the stethoscope. • STETHOSCOPIST n. one who uses a stethoscope.
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| STREPITATIONS | • STREPITATION n. a clamour. | 
| TRAINSPOTTERS | • trainspotters n. Plural of trainspotter. • train␣spotters n. Plural of train spotter.
 • TRAINSPOTTER n. a train-watching enthusiast.
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