| COUNTERWEIGHTED | • counterweighted v. Simple past tense and past participle of counterweight. • COUNTERWEIGHT v. to balance with an equivalent weight or force. |
| DAGUERREOTYPIST | • daguerreotypist n. A person who makes daguerreotypes. • DAGUERREOTYPIST n. one who practises daguerreotyping, also DAGUERREOTYPER. |
| DECONCENTRATING | • deconcentrating v. Present participle of deconcentrate. • DECONCENTRATE v. to reduce or abolish the concentration of. |
| DEFRAGMENTATION | • defragmentation n. (Computing) The action of defragmenting, particularly with respect to a computer disk or drive. |
| DEGENERATIONIST | • degenerationist n. (Biology, historical) One who believes in the theory of degenerationism. • DEGENERATIONIST n. someone who believes that the tendency of man is not to improve, but to degenerate. |
| DELEGITIMATIONS | • delegitimations n. Plural of delegitimation. • DELEGITIMATION n. the act of delegitimizing. |
| DEMAGNETISATION | • demagnetisation n. (British spelling) Alternative form of demagnetization. • DEMAGNETISATION n. the act of demagnetising, also DEMAGNETIZATION. |
| DEMAGNETIZATION | • demagnetization n. The process of removing the magnetic field from an object. • DEMAGNETIZATION n. the act of demagnetizing, also DEMAGNETISATION. |
| DEPHLOGISTICATE | • dephlogisticate v. To take away the phlogiston, i.e. ability to burn, which is now understood to be chemically impossible. • DEPHLOGISTICATE v. to make something fireproof. |
| DEPIGMENTATIONS | • depigmentations n. Plural of depigmentation. • DEPIGMENTATION n. loss of normal pigmentation. |
| DEREGISTRATIONS | • deregistrations n. Plural of deregistration. • DEREGISTRATION n. the act of deregistering. |
| DYSTELEOLOGISTS | • dysteleologists n. Plural of dysteleologist. • DYSTELEOLOGIST n. a specialist in dysteleology, the study of functionless rudimentary organs in animals and plants. |
| REDINTEGRATIONS | • redintegrations n. Plural of redintegration. • REDINTEGRATION n. revival of the whole of a previous mental state when a phase of it recurs. |
| SEDIMENTOLOGIST | • sedimentologist n. A person involved in sedimentology. • SEDIMENTOLOGIST n. one who studies sedimentology. |
| THERMOREGULATED | • thermoregulated v. Simple past tense and past participle of thermoregulate. • THERMOREGULATE v. to regulate by means of heat. |