| DEFIBRILLATORS | • defibrillators n. Plural of defibrillator. • DEFIBRILLATOR n. an electronic device that applies an electric shock to restore the rhythm of a fibrillating heart. |
| FABRICATORS | • fabricators n. Plural of fabricator. • FABRICATOR n. one who fabricates. |
| FIBROCARTILAGES | • fibrocartilages n. Plural of fibrocartilage. • FIBROCARTILAGE n. cartilage with embedded fibres. |
| FIBROSARCOMATA | • fibrosarcomata n. Plural of fibrosarcoma. • FIBROSARCOMA n. a sarcoma formed of spindle-shaped cells in collagenous fibrils. |
| FIRSTBORN | • firstborn n. The first child to be born to a parent or family. • firstborn adj. Born as the first one in a family, flock or the like. • firstborn adj. Most excellent; most distinguished or exalted. |
| FIRSTBORNS | • firstborns n. Plural of firstborn. • FIRSTBORN n. the first in order of birth, the eldest child. |
| FOREBITTERS | • FOREBITTER n. a nautical ballad sung at the forebitts. |
| FREEBOOTERIES | • FREEBOOTERY n. piracy, also FREEBOOTY. |
| FRITHBORHS | • frithborhs n. Plural of frithborh. • FRITHBORH n. (Old English) a surety for keeping the peace, aka frankpledge. |
| PREFABRICATIONS | • prefabrications n. Plural of prefabrication. • PREFABRICATION n. the act of prefabricating. |
| PREFABRICATORS | • prefabricators n. Plural of prefabricator. • PREFABRICATOR n. one who prefabricates. |
| REFORMABILITIES | • REFORMABILITY n. the state of being reformable. |
| STROBILIFORM | • strobiliform adj. Shaped like a strobile. • STROBILIFORM adj. having the form of a strobil. |
| STROMBULIFEROUS | • STROMBULIFEROUS adj. bearing spirally coiled organs. |
| STROMBULIFORM | • STROMBULIFORM adj. shaped like a spinning top; spirally twisted. |
| TUBERIFEROUS | • tuberiferous adj. Producing or bearing tubers. • TUBERIFEROUS adj. bearing tubers. |