| AREOSTYLES | • areostyles n. Plural of areostyle. • AREOSTYLE n. a building or colonnade having columns four diameters or more apart, also ARAEOSTYLE. |
| ASTROCYTES | • astrocytes n. Plural of astrocyte. • ASTROCYTE n. a much-branched, star-shaped neuroglia cell. |
| CRAYONISTS | • crayonists n. Plural of crayonist. • CRAYONIST n. one who draws in crayon, also CRAYONER. |
| CYSTOCARPS | • cystocarps n. Plural of cystocarp. • CYSTOCARP n. the fructification in red seaweeds. |
| FORSYTHIAS | • forsythias n. Plural of forsythia. • FORSYTHIA n. any shrub of the genus Forsythia, a popular garden plant producing clusters of yellow jasmine-like flowers in the spring. |
| GRAYSTONES | • graystones n. Plural of graystone. • GRAYSTONE n. a grey igneous rock of volcanic origin, also GREYSTONE. |
| HYDROCASTS | • hydrocasts n. Plural of hydrocast. • HYDROCAST n. a gathering of water samples for analysis. |
| HYDROSTATS | • hydrostats n. Plural of hydrostat. • HYDROSTAT n. a contrivance or apparatus to prevent the explosion of steam boilers. |
| HYGROSTATS | • hygrostats n. Plural of hygrostat. • HYGROSTAT n. a machine for regulating the humidity of air. |
| MACROCYSTS | • macrocysts n. Plural of macrocyst. • MACROCYST n. an unusually large cyst. |
| PYROCLASTS | • pyroclasts n. Plural of pyroclast. • PYROCLAST n. ash and other debris ejected by a volcano. |
| ROYALMASTS | • royal␣masts n. Plural of royal mast. • ROYALMAST n. the highest part of a mast. |
| SALLYPORTS | • sallyports n. Plural of sallyport. • sally␣ports n. Plural of sally port. • SALLYPORT n. a gateway or opening for making a sally from a fortified place. |
| SOOTHSAYER | • soothsayer n. One who predicts the future, using magic, intuition or intelligence; a diviner. • soothsayer n. A mantis or rearhorse. • soothsayer n. (Obsolete) One who tells the truth; a truthful person. |
| STOCKYARDS | • stockyards n. Plural of stockyard. • STOCKYARD n. a large yard with pens where cattle are kept for slaughter, market etc. |
| STYROFOAMS | • styrofoams n. Plural of styrofoam. • STYROFOAM n. (tradename) a type of expanded plastic made from polystyrene. |
| TYROSINASE | • tyrosinase n. An enzyme, similar to catechol oxidase, that catalyzes the production of phenolic pigments such as melanin. • TYROSINASE n. an enzyme found in plants and animals. |