| DEONTOLOGIST | • deontologist n. (Ethics) A philosopher or other thinker who advocates or employs a deontological approach to ethics. • DEONTOLOGIST n. a student of deontology. | 
| DEONTOLOGISTS | • deontologists n. Plural of deontologist. • DEONTOLOGIST n. a student of deontology. | 
| DOLOMITISATION | • DOLOMITISATION n. the process of converting into dolomite, also DOLOMITIZATION. | 
| DOLOMITISATIONS | • DOLOMITISATION n. the process of converting into dolomite, also DOLOMITIZATION. | 
| DOLOMITIZATION | • dolomitization n. (Geology) The conversion of a limestone rock into dolomite by replacement of calcium by magnesium. • DOLOMITIZATION n. the process of converting into dolomite, also DOLOMITISATION. | 
| DOLOMITIZATIONS | • dolomitizations n. Plural of dolomitization. • DOLOMITIZATION n. the process of converting into dolomite, also DOLOMITISATION. | 
| DROOLWORTHIEST | • DROOLWORTHY adj. inspiring or likely to inspire excessive enthusiasm or pleasure; extremely attractive or desirable. | 
| METHODOLOGIST | • methodologist n. A person who studies methodology, or applies its principles. • METHODOLOGIST n. a student of methodology. | 
| METHODOLOGISTS | • methodologists n. Plural of methodologist. • METHODOLOGIST n. a student of methodology. | 
| ODONATOLOGIST | • odonatologist n. One who studies odonatology. • ODONATOLOGIST n. one who studies dragonflies. | 
| ODONATOLOGISTS | • odonatologists n. Plural of odonatologist. • ODONATOLOGIST n. one who studies dragonflies. | 
| ODONTOBLASTIC | • odontoblastic adj. Relating to odontoblasts. • ODONTOBLASTIC adj. of or like an odontoblast, a tooth cell in the surface of dental pulp that produces dentine. | 
| ODONTOLITE | • odontolite n. (Mineralogy) A fossil tooth coloured a bright blue by iron phosphate, used as an imitation turquoise. • ODONTOLITE n. a fossil bone or tooth coloured blue with phosphate of iron, aka bone-turquoise. | 
| ODONTOLITES | • odontolites n. Plural of odontolite. • ODONTOLITE n. a fossil bone or tooth coloured blue with phosphate of iron, aka bone-turquoise. | 
| ODONTOLOGIST | • odontologist n. One who studies teeth. • ODONTOLOGIST n. a student of odontology. | 
| ODONTOLOGISTS | • odontologists n. Plural of odontologist. • ODONTOLOGIST n. a student of odontology. | 
| ORTHODONTICALLY | • orthodontically adv. By orthodontic means. • ORTHODONTIC adv. relating to orthodontics, the rectification of crookedness in the teeth. |