| DEHORTATIONS | • dehortations n. Plural of dehortation. • DEHORTATION n. advice against something, dissuasion. |
| DELTIOLOGIST | • deltiologist n. A collector of picture postcards. • DELTIOLOGIST n. a collector of picture postcards. |
| DEONTOLOGIST | • deontologist n. (Ethics) A philosopher or other thinker who advocates or employs a deontological approach to ethics. • DEONTOLOGIST n. a student of deontology. |
| DEPORTATIONS | • deportations n. Plural of deportation. • DEPORTATION n. an act or instance of deporting. |
| DEPOSITATION | • depositation n. The act of depositing, or material that is deposited. • DEPOSITATION n. in Scots law, a bailment where one entrusts goods to another to be kept without recompense. |
| DETRITOVORES | • DETRITOVORE n. an organism that feeds on detritus. |
| DEVOTIONISTS | • devotionists n. Plural of devotionist. • DEVOTIONIST n. one who practises devotion. |
| DIOPTOMETERS | • dioptometers n. Plural of dioptometer. • DIOPTOMETER n. an instrument for measuring ocular refraction. |
| DOMESTICATOR | • domesticator n. One who domesticates. • DOMESTICATOR n. one who domesticates. |
| ENDODONTISTS | • endodontists n. Plural of endodontist. • ENDODONTIST n. a practitioner of endodontics. |
| KETOSTEROIDS | • ketosteroids n. Plural of ketosteroid. • KETOSTEROID n. a steroid, such as cortisone or estrone, containing a ketone group. |
| OROTUNDITIES | • orotundities n. Plural of orotundity. • OROTUNDITY n. the orotund mode of intonation, also OROROTUNDITY. |
| ORTHOPAEDIST | • orthopaedist n. Alternative spelling of orthopedist. • orthopædist n. Obsolete typography of orthopaedist. • ORTHOPAEDIST n. a specialist in orthopaedy, also ORTHOPEDIST. |
| ORTHOPEDISTS | • orthopedists n. Plural of orthopedist. • ORTHOPEDIST n. a specialist in orthopedics, also ORTHOPAEDIST. |
| OUTDOORSIEST | • outdoorsiest adj. Superlative form of outdoorsy: most outdoorsy. • OUTDOORSY adj. (colloq.) of an outdoors inclination. |
| PERIODONTIST | • periodontist n. A dentist whose speciality is periodontics. • PERIODONTIST n. a dentist specialising in periodontics. |
| PROGLOTTIDES | • proglottides n. Plural of proglottis. • PROGLOTTID n. a segment of a tapeworm, also PROGLOTTIS. |
| TAUTOLOGISED | • tautologised v. Simple past tense and past participle of tautologise. • TAUTOLOGISE v. to use tautology, also TAUTOLOGIZE. |