| APODYTERIUMS | • apodyteriums n. Plural of apodyterium. • APODYTERIUM n. an undressing-room at a Roman bath. |
| ASPERSORIUMS | • aspersoriums n. Plural of aspersorium. • ASPERSORIUM n. a basin for holy water. |
| COLUMBARIUMS | • columbariums n. Plural of columbarium. |
| CREMATORIUMS | • crematoriums n. Plural of crematorium. • CREMATORIUM n. a place where bodies are cremated, also CREMATORY. |
| DINOTHERIUMS | • dinotheriums n. Plural of dinotherium. • DINOTHERIUM n. an extinct elephantine mammal with downward-curving tusks, also DEINOTHERE, DEINOTHERIUM, DINOTHERE. |
| EQUILIBRIUMS | • equilibriums n. Plural of equilibrium. • EQUILIBRIUM n. a state of intellectual or emotional balance. |
| GYMNATORIUMS | • gymnatoriums n. Plural of gymnatorium. |
| INSECTARIUMS | • insectariums n. Plural of insectarium. • INSECTARIUM n. a place for keeping living insects, also INSECTARY. |
| LEPROSARIUMS | • leprosariums n. Plural of leprosarium. • LEPROSARIUM n. a hospital for lepers. |
| LIVERMORIUMS | • LIVERMORIUM n. a transuranic element produced by bombarding curium with calcium-20 ions. |
| LUBRITORIUMS | • lubritoriums n. Plural of lubritorium. • LUBRITORIUM n. a place in a garage or service station where motor vehicles are lubricated. |
| MAGISTERIUMS | • magisteriums n. Plural of magisterium. • MAGISTERIUM n. (Latin) the teaching function of the Catholic church. |
| MESOTHORIUMS | • mesothoriums n. Plural of mesothorium. • MESOTHORIUM n. an old name for either of two radioactive elements. |
| NOTOTHERIUMS | • NOTOTHERIUM n. an extinct Pleistocene rhinoceros-sized marsupial of the genus Nototherium, related to the wombats. |
| OPHIDIARIUMS | • OPHIDIARIUM n. a snake-house. |
| PLANETARIUMS | • planetariums n. Plural of planetarium. • PLANETARIUM n. a model or representation of the solar system. |
| SCRIPTORIUMS | • scriptoriums n. Plural of scriptorium. • SCRIPTORIUM n. (Latin) a writing room, esp. of scribes in medieval monastery. |
| SUBDELIRIUMS | • SUBDELIRIUM n. a mild or intermittent delirium. |
| TERMITARIUMS | • termitariums n. Plural of termitarium. • TERMITARIUM n. (Latin) a termite nest. |