| CUNDUMS | • cundums n. Plural of cundum. • CUNDUM n. a condom. |
| DUBNIUM | • dubnium n. A transuranic chemical element (symbol Db) with atomic number 105. • dubnium n. (Chemistry, obsolete) A rejected name for rutherfordium. • DUBNIUM n. an element produced by bombarding plutonium with high energy neon ions. |
| DUMDUMS | • dumdums n. Plural of dumdum. • dum-dums n. Plural of dum-dum (alternative form of dumdums). • dum␣dums n. Plural of dum dum. |
| DURDUMS | • durdums n. Plural of durdum. • DURDUM n. (Scots) an uproar; a scolding; blame, also DIRDAM, DIRDUM. |
| DUUMVIR | • duumvir n. One of two persons jointly exercising the same office in Republican Rome. • DUUMVIR n. (Latin) a magistrate of ancient Rome. |
| GURUDOM | • gurudom n. The realm of gurus. • gurudom n. The state of being a guru. • GURUDOM n. the state of being a guru, also GURUISM. |
| HUMDRUM | • humdrum adj. Lacking variety or excitement; dull; boring. • humdrum n. (Uncountable) The quality of lacking variety or excitement. • humdrum n. (Countable, dated) A stupid fellow. |
| MODULUS | • modulus n. (Mathematics) The base with respect to which a congruence is computed. • modulus n. (Mathematics) The absolute value of a complex number. • modulus n. (Physics) A coefficient that expresses how much of a certain property is possessed by a certain substance. |
| MUDBUGS | • mudbugs n. Plural of mudbug; see crayfish. • MUDBUG n. a crayfish. |
| RUMDUMS | • rumdums n. Plural of rumdum. • RUMDUM n. an alcoholic. |
| TRIDUUM | • triduum n. A period of three days (especially in Roman Catholic liturgy). • TRIDUUM n. (Latin) a period of three days of prayer preceding Roman Catholic feasts. |
| UNFUMED | • unfumed adj. Not exposed to fumes; not fumigated. • unfumed adj. (Obsolete) Undistilled. • UNFUMED adj. not fumigated. |
| UNMOULD | • unmould v. (Transitive) To remove from a mould. • unmould v. (Transitive) To change the form of; to reduce from any form. • UNMOULD v. to change the form of; to reduce from any form, also UNMOLD. |
| UREDIUM | • uredium n. Synonym of uredinium. • UREDIUM n. a spore-producing organ of certain fungi, also UREDINIUM. |