| BIODEFENSE | • biodefense n. Any defensive measure taken against an attack using bacteria, viruses or toxins. |
| DEBRIEFERS | • debriefers n. Plural of debriefer. • DEBRIEFER n. one who debriefs. |
| DEFEASIBLE | • defeasible adj. (Law, logic) Capable of being defeated, terminated, annulled, voided or invalidated. • DEFEASIBLE adj. that may be annulled. |
| DEFECTIVES | • defectives n. Plural of defective. • DEFECTIVE n. a person who is subnormal in physical or mental powers. |
| DEFEMINISE | • defeminise v. Alternative spelling of defeminize. • DEFEMINISE v. to remove feminine characteristics from, also DEFEMINIZE. |
| DEFENSIBLE | • defensible adj. (Of an installation etc) capable of being defended against armed attack. • defensible adj. (Of an argument etc) capable of being justified. • DEFENSIBLE adj. that can be defended. |
| DEFENSIVES | • defensives n. Plural of defensive. • DEFENSIVE n. a state or position of defence. |
| ESTERIFIED | • esterified v. Simple past tense and past participle of esterify. • esterified adj. (Chemistry) (of an acid) Combined with an alcohol or (of an alcohol) combined with an acid, to form an ester. • ESTERIFY v. to convert into an ester. |
| FEDERACIES | • federacies n. Plural of federacy. • FEDERACY n. confederacy. |
| FEDERALISE | • federalise v. Alternative spelling of federalize. • FEDERALISE v. to unite in a federation, also FEDERALIZE. |
| FEDERARIES | • federaries n. Plural of federary. • FEDERARY n. (Shakespeare) a confederate, also FEDARIE, FEDERARIE, FOEDARIE. |
| FREEDIVERS | • freedivers n. Plural of freediver. • free-divers n. Plural of free-diver. • free␣divers n. Plural of free diver. |
| NEEDLEFISH | • needlefish n. Slender fish, in the family Belonidae, usually found in shallow marine habitats. • NEEDLEFISH n. the European great pipefish. |
| PREDEFINES | • predefines v. Third-person singular simple present indicative form of predefine. • PREDEFINE v. to define in advance. |
| REAEDIFIES | • reaedifies v. Third-person singular simple present indicative form of reaedify. • REAEDIFY v. (Spenser) to rebuild, also REAEDIFYE, REEDIFY. |
| REAEDIFYES | • REAEDIFYE v. (Spenser) to rebuild, also REAEDIFY, REEDIFY. |
| REFEEDINGS | • refeedings n. Plural of refeeding. • REFEEDING n. the act of feeding again. |
| SWIMFEEDER | • SWIMFEEDER n. a device containing bait, attached to the line to ensure the gradual baiting of the swim from under the surface. |