| FIBREBOARD | • fibreboard n. Britain and Canada standard spelling of fiberboard. • FIBREBOARD n. a material made from compressed wood fibres, also FIBERBOARD. |
| FIBREFILLS | • fibrefills n. Plural of fibrefill. • FIBREFILL n. synthetic fibres used as a filling material, also FIBERFILL. |
| FIBREGLASS | • fibreglass n. Silica based glass extruded into fibers that possess a length at least 1000 times greater than their width. • fibreglass n. Ellipsis of fibreglass wool. • fibreglass n. A composite material made from fine fibres of spun glass held together with resin. |
| FIBREOPTIC | • fibreoptic adj. Alternative spelling of fibre optic. • fibre-optic adj. Alternative spelling of fibre optic. • fibre␣optic adj. Of, or relating to fibre optics, or to optical fibre. |
| FIBRESCOPE | • fibrescope n. (Britain) An instrument, consisting of a fibre optic bundle, used to observe inaccessible areas. • FIBRESCOPE n. a medical instrument using fibre optic bundles, also FIBERSCOPE. |
| FIBRILLARY | • fibrillary adj. Of or pertaining to fibrils, or nanoscale fibers. • FIBRILLARY adj. of or pertaining to fibrils or fibers, also FIBRILAR, FIBRILLAR. |
| FIBRILLATE | • fibrillate v. (Intransitive) To make rapid irregular movements. • FIBRILLATE v. to undergo fibrillation. |
| FIBRILLINS | • fibrillins n. Plural of fibrillin. • FIBRILLIN n. a protein found in connective tissue. |
| FIBRILLOSE | • fibrillose adj. Covered with fibrils, such as fungi or the undersurface of some lichens. • FIBRILLOSE adj. having, or covered with, small fibres or the appearance of small fibres. |
| FIBRILLOUS | • fibrillous adj. Alternative spelling of fibrillose. • FIBRILLOUS adj. relating to or having small fibres. |
| FIBRINOGEN | • fibrinogen n. A protein that in humans plays a part in the forming of clots. • FIBRINOGEN n. a soluble protein, a globulin, in blood plasma, converted to fibrin by the action of the enzyme thrombin when blood clots. |
| FIBRINOIDS | • fibrinoids n. Plural of fibrinoid. • FIBRINOID n. a natural material that resembles fibrin. |
| FIBROBLAST | • fibroblast n. A cell found in connective tissue that produces fibers, such as collagen. • FIBROBLAST n. a cell in connective tissue from which connective tissue is formed. |
| FIBROCYTES | • fibrocytes n. Plural of fibrocyte. • FIBROCYTE n. a normally inactive fibroblast which proliferates following tissue damage. |
| FIBROLINES | • FIBROLINE n. a yarn of flax, jute and hemp waste. |
| FIBROLITES | • fibrolites n. Plural of fibrolite. • FIBROLITE n. (tradename) a type of building board containing asbestos and cement , also FIBRO, FIBROCEMENT. |
| FIBROSITIS | • fibrositis n. Fibromyalgia. • FIBROSITIS n. inflammation of the nerve fibres. |