| ANTHURIUMS | • anthuriums n. Plural of anthurium. • ANTHURIUM n. a tropical American plant. |
| ARBITRIUMS | • ARBITRIUM n. (Latin) a power of decision. |
| CALVARIUMS | • calvariums n. Plural of calvarium. • CALVARIUM n. (Latin) the dome of the skull. |
| COLLYRIUMS | • collyriums n. Plural of collyrium. • COLLYRIUM n. (Greek) an eye lotion. |
| CRITERIUMS | • criteriums n. Plural of criterium. • CRITERIUM n. a kind of cycling race. |
| DEUTERIUMS | • deuteriums n. Plural of deuterium. • DEUTERIUM n. heavy hydrogen, an isotope of hydrogen of double mass. |
| ELATERIUMS | • ELATERIUM n. a substance contained in the juice of the fruit of the squirting cucumber, producing the purgative elaterin. |
| HERBARIUMS | • herbariums n. Plural of herbarium. • HERBARIUM n. a collection of preserved plants and herbs. |
| MANUBRIUMS | • manubriums n. Plural of manubrium. • MANUBRIUM n. (Latin) any handle-like structure. |
| PASTORIUMS | • PASTORIUM n. the residence of a pastor. |
| POMOERIUMS | • POMOERIUM n. (Latin) an open space around a town within the walls. |
| SACRARIUMS | • SACRARIUM n. (Latin) the sanctuary or sacristy (room housing sacred vessels) of a church. |
| SENSORIUMS | • sensoriums n. Plural of sensorium. • SENSORIUM n. the area of the brain that is the seat of sensation. |
| TELLURIUMS | • telluriums n. Plural of tellurium. • TELLURIUM n. a rare chemical element, a silvery-white brittle metalloid resembling selenium. |
| TERRARIUMS | • terrariums n. Plural of terrarium. • TERRARIUM n. (Latin) a glass enclosure for plants. |