| COUNTERFIRE | • counterfire n. (Military) firing of weapons in response. • COUNTERFIRE n. return fire. |
| FERROTYPING | • ferrotyping v. Present participle of ferrotype. • FERROTYPE v. to take a photograph by ferrotype. |
| FORETHINKER | • forethinker n. One who thinks ahead, or plans things in advance. • FORETHINKER n. one who forethinks. |
| FORTRESSING | • fortressing v. Present participle of fortress. • FORTRESS v. to strengthen with a fortress. |
| FRONTIERING | • frontiering v. Present participle of frontier. • FRONTIER v. (Spenser) to border. |
| INFERIORITY | • inferiority n. The quality or state of being inferior. • inferiority n. An inferior value or quality. • inferiority n. An inferior power. |
| INTERFERONS | • interferons n. Plural of interferon. • INTERFERON n. any of several proteins produced by cells infected with a virus and having the ability to inhibit viral growth. |
| PERFORATING | • perforating v. Present participle of perforate. • PERFORATE v. to bore through or into. |
| PERFORATION | • perforation n. The act of perforating or the state of being perforated. • perforation n. Any opening in a solid object. • perforation n. (Medicine) An abnormal opening in an organ, such as a rupture. |
| RAINFORESTS | • rainforests n. Plural of rainforest. • rain␣forests n. Plural of rain forest. • RAINFOREST n. a complex community dominated by trees, with high rainfall, many epiphytes and lianes. |
| RAREFACTION | • rarefaction n. A reduction in the density of a material, especially that of a fluid. • RAREFACTION n. the act of rarefying. |
| REFECTIONER | • refectioner n. A person in charge of food and drink in a monastery. • REFECTIONER n. the officer in charge of the refectory and its arrangements, also REFECTORIAN. |
| REFECTORIAN | • refectorian n. One in charge of a refectory. • REFECTORIAN n. the officer in charge of the refectory and its arrangements, also REFECTIONER. |
| REFORESTING | • reforesting v. Present participle of reforest. • REFOREST v. to replant with trees. |
| REFORMATION | • reformation n. An improvement (or an intended improvement) in the existing form or condition of institutions or practices… • reformation n. (Law) Change or correction, by a court in equity, to a written instrument to conform to the original… • Reformation prop.n. (Historical) The religious movement initiated in the 16th century against the Roman Catholic Church. |
| REFRACTIONS | • refractions n. Plural of refraction. • REFRACTION n. the bending of waves or rays of energy. |
| RETROFIRING | • retrofiring v. Present participle of retrofire. • RETROFIRE v. to cause a retrorocket to become ignited. |
| RIVERFRONTS | • riverfronts n. Plural of riverfront. • RIVERFRONT n. the land or area along a river. |