| DIOBOLONS | • DIOBOLON n. (Greek) an ancient Greek coin, also DIOBOL. |
| DOSIOLOGY | • dosiology n. Alternative form of dosology. • DOSIOLOGY n. the branch of medicine that deals with dosages, also DOSOLOGY, POSOLOGY. |
| HOODOOISM | • hoodooism n. Synonym of voodooism. • HOODOOISM n. the bringing of bad luck. |
| INODOROUS | • inodorous adj. (Archaic) Odourless. • INODOROUS adj. emitting no odor. |
| IODOFORMS | • iodoforms n. Plural of iodoform. • IODOFORM n. a lemon-yellow crystalline compound of iodine with a saffron-like odour, used as an antiseptic. |
| IODOPHORS | • iodophors n. Plural of iodophor. • IODOPHOR n. a soluble compound of iodine used in making disinfectants. |
| IONOSONDE | • ionosonde n. A radar for the examination of the ionosphere. • IONOSONDE n. an instrument for measuring ionization. |
| IRONWOODS | • ironwoods n. Plural of ironwood. • IRONWOOD n. a species of Australian eucalyptus, also IRONBARK. |
| ISODOMOUS | • isodomous adj. Synonym of isodomic. • ISODOMOUS adj. in the form of an isodomon, masonry of uniform blocks in course of equal heights. |
| ISOPODOUS | • isopodous adj. Belonging or relating to the isopods. • ISOPODOUS adj. of or like an isopod, a kind of small crustacean. |
| ODONTOIDS | • odontoids n. Plural of odontoid. • ODONTOID n. a toothlike projection from the second vertebra of the neck. |
| OMOHYOIDS | • omohyoids n. Plural of omohyoid. • OMOHYOID n. a shoulder-blade muscle. |
| VOODOOISM | • voodooism n. (Uncountable) A religious cult, from Haiti, involving witchcraft and sorcery. • voodooism n. (Countable) Any voodoo practice. • VOODOOISM n. the belief in or practice of voodoo. |
| VOODOOIST | • voodooist n. A practitioner or student of voodoo. • VOODOOIST n. a practitioner of voodoo. |