| EFFUSIOMETERS | • effusiometers n. Plural of effusiometer. • EFFUSIOMETER n. an instrument for comparing the molecular weights of gases. |
| ELECTROFORMED | • electroformed adj. Produced, or modified by electroforming. • ELECTROFORM v. to form (shaped articles) by electrodeposition on a mold. |
| FELLMONGERIES | • fellmongeries n. Plural of fellmongery. • FELLMONGERY n. the preparation of skins for the tanner. |
| FOREBODEMENTS | • forebodements n. Plural of forebodement. • FOREBODEMENT n. a feeling of coming evil. |
| FOREJUDGEMENT | • forejudgement n. Alternative form of forejudgment. • FOREJUDGEMENT n. an advance judgment, also FOREJUDGMENT. |
| FOREMENTIONED | • forementioned adj. Alternative form of aforementioned. • FOREMENTIONED adj. mentioned before in writing or speech, also AFOREMENTIONED. |
| FREEMASONRIES | • freemasonries n. Plural of freemasonry. • FREEMASONRY n. spontaneous fellowship and sympathy among a number of people. |
| FULSOMENESSES | • FULSOMENESS n. the state of being fulsome. |
| REFLECTOMETER | • reflectometer n. An instrument used to measure the reflectance of a surface. • REFLECTOMETER n. instrument for measuring reflectance of radiant energy. |
| REFLECTOMETRY | • reflectometry n. (Physics) The science of the design and use of reflectometers. • REFLECTOMETRY n. measurement by reflectometer. |
| REFRACTOMETER | • refractometer n. (Physics) An optical instrument used to measure the refractive index of a substance. • REFRACTOMETER n. an instrument for measuring the refraction of light. |
| REINFORCEMENT | • reinforcement n. (Uncountable) The act, process, or state of reinforcing or being reinforced. • reinforcement n. (Countable) A thing that reinforces. • reinforcement n. (In the plural) Additional troops or materiel sent to support a military action. |