| ANNULUSES | • annuluses n. Plural of annulus. • ANNULUS n. (Latin) a ring or ringlike part. |
| BUSULFANS | • BUSULFAN n. a drug used to treat leukaemia. |
| CUSTUMALS | • custumals n. Plural of custumal. • CUSTUMAL n. a written record or laws and customs. |
| SAECULUMS | • saeculums n. Plural of saeculum. • SAECULUM n. (Latin) an astronomical or geological age, also SECULUM. |
| SQUAMULAS | • squamulas n. Plural of squamula. • SQUAMULA n. a little scale, also SQUAMELLA, SQUAMULE. |
| SQUAMULES | • squamules n. Plural of squamule. • SQUAMULE n. a little scale, also SQUAMELLA, SQUAMULA. |
| SUBADULTS | • subadults n. Plural of subadult. • SUBADULT n. an individual approaching adulthood. |
| SUBCLAUSE | • subclause n. (Grammar) A subordinate clause. • subclause n. A subsidiary clause in a legal contract etc. • subclause v. (Transitive) To qualify with a subclause. |
| SUBUCULAS | • SUBUCULA n. (Latin) in the early English church, a kind of cassock worn under the alb. |
| SUBVISUAL | • subvisual adj. That is too dim to be seen unaided. • SUBVISUAL adj. below the threshold of visual perception. |
| SUCCURSAL | • succursal adj. Subsidiary (to a religious establishment). • succursal adj. Serving to aid or help; serving as a chapel of ease; tributary. • succursal n. A subsidiary parish. |
| USTULATES | • USTULATE v. to give a charred appearance to. |
| USUALNESS | • usualness n. The quality or state of being usual. • usualness n. (Countable) Something that is usual. • USUALNESS n. the state of being usual. |
| VASCULUMS | • vasculums n. Plural of vasculum. • VASCULUM n. (Latin) a box used to hold plant specimens. |