| CERASTIUMS | • cerastiums n. Plural of cerastium. • CERASTIUM n. any low ground-covering plant of the genus Cerastium, that includes the alpine mouse-ear chickweed. |
| CONSORTIUMS | • consortiums n. Plural of consortium. • CONSORTIUM n. (Latin) an association of organizations or States formed for commercial or financial purposes. |
| DARMSTADTIUMS | • DARMSTADTIUM n. an artificially produced radioactive element. |
| HELVETIUMS | • HELVETIUM n. a superseded name for the element astatine. |
| JOLIOTIUMS | • JOLIOTIUM n. a former name for the element dubnium. |
| LUTETIUMS | • LUTETIUM n. a rare earth element, also LUTECIUM. |
| NASTURTIUMS | • nasturtiums n. Plural of nasturtium. • NASTURTIUM n. a genus of cruciferous plants, having white or yellowish flowers, including several species of cress. |
| PANARITIUMS | • PANARITIUM n. a whitlow. |
| PANCRATIUMS | • pancratiums n. Plural of pancratium. • PANCRATIUM n. an athletic contest involving both boxing and wrestling. |
| PROTIUMS | • protiums n. Plural of protium. • PROTIUM n. ordinary hydrogen of atomic weight 1, as distinct from deuterium and tritium. |
| RADIOSTRONTIUMS | • radiostrontiums n. Plural of radiostrontium. • RADIOSTRONTIUM n. a radioactive isotope of strontium, esp. strontium-90. |
| SATELLITIUMS | • SATELLITIUM n. a group of three or more planets lying in one sign of the zodiac. |
| STRONTIUMS | • strontiums n. Plural of strontium. • STRONTIUM n. a metallic element of the calcium group. |
| TECHNETIUMS | • TECHNETIUM n. a chemical element. |
| TRITIUMS | • tritiums n. Plural of tritium. • TRITIUM n. an isotope of hydrogen. |
| UNNILPENTIUMS | • UNNILPENTIUM n. a former name of the transuranic element dubnium. |
| UNNILSEPTIUMS | • UNNILSEPTIUM n. a former name of the transuranic element bohrium. |