| FIR | far infrared; fold increase in resistance |
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| bal | balance; balsam |
| bals | balsam |
| FIR | Finite Impulse Response |
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| riga fir | <botany> A species of pine (Pinus sylvestris), and its wood, which affords a valuable timber; called also Scotch pine, and red or yellow deal. It grows in all parts of Europe, in the Caucasus, and in Siberia. Origin: So called from Riga, a city in Russia. Source: Websters Dictionary (01 Mar 1998) |
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| sea fir | <zoology> A sertularian hydroid, especially Sertularia abietina, which branches like a miniature fir tree. Source: Websters Dictionary (01 Mar 1998) |
| joint-fir | <botany> A genus (Ephedra) of leafless shrubs, with the stems conspicuously jointed; called also shrubby horsetail. There are about thirty species, of which two or three are found from Texas to California. Source: Websters Dictionary (01 Mar 1998) |
| fir | <botany> A genus (Abies) of coniferous trees, often of large size and elegant shape, some of them valued for their timber and others for their resin. The species are distinguished as the balsam fir, the silver fir, the red fir, etc. The Scoth fir is a Pinus. Fir in the Bible means any one of several coniferous trees, including, cedar, cypress, and probably three species of pine. Origin: Dan. Fyr, fyrr; akin to Sw. Furu, Icel. Fura, AS. Furh in furhwudu fir wood, G. Fohre, OHG. Forha pine, vereheih a sort of oak, L. Quercus ak. Source: Websters Dictionary (01 Mar 1998) |
| fir tree | See Fir. Source: Websters Dictionary (01 Mar 1998) |
| balsam | 1. A resin containing more or less of an essential or volatile oil. The balsams are aromatic resinous substances, flowing spontaneously or by incision from certain plants. A great variety of substances pass under this name, but the term is now usually restricted to resins which, in addition to a volatile oil, contain benzoic and cinnamic acid. Among the true balsams are the balm of Gilead, and the balsams of copaiba, Peru, and Tolu. There are also many pharmaceutical preparations and resinous substances, possessed of a balsamic smell, to which the name balsam has been given. 2. <botany> A species of tree (Abies balsamea). An annual garden plant (Impatiens balsamina) with beautiful flowers; balsamine. 3. Anything that heals, soothes, or restores. <botany> "Was not the people's blessing a balsam to thy blood?" (Tennyson) Balsam apple, the American coniferous tree, Abies balsamea, from which the useful Canada balsam is derived. Balsam of copaiba. See Copaiba. Balsam of Mecca, balm of Gilead. Balsam of Peru, a reddish brown, syrupy balsam, obtained from a Central American tree (Myroxylon Pereirae and used as a stomachic and expectorant, and in the treatment of ulcers, etc. It was long supposed to be a product of Peru. Balsam of Tolu, a reddish or yellowish brown semisolid or solid balsam, obtained from a South American tree (Myxoxylon toluiferum). It is highly fragrant, and is used as a stomachic and expectorant. Balsam tree, any tree from which balsam is obtained, especially. The Abies balsamea. Canada balsam, Balsam of fir, Canada turpentine, a yellowish, viscid liquid, which, by time and exposure, becomes a transparent solid mass. It is obtained from the balm of Gilead (or balsam) fir (Abies balsamea) by breaking the vesicles upon the trunk and branches. See Balm. Origin: L. Balsamum the balsam tree or its resin, Gr. See Balm. Source: Websters Dictionary (01 Mar 1998) |
| balsam, Canada | <microscopy> A resin from the balsam fir Abies balsamea. Dissolved in xylene, toluene, or benzene it is used as a mountant for permanent microscopical preparations. Its refractive index may vary from 1.530 to l.545 and its softening point from room temperature to 100deg.C, these properties varying with age and solvent content. If impure it discolours with age. See: lens, Bertrand. (05 Aug 1998) |
| balsam of copaiba | The oleoresin of Copaifera officinalis and other species of Copaifera (family Leguminosae), a South American plant; copaiba oil is used as an expectorant, diuretic, and stimulant. Synonym: balsam of copaiba. Origin: Sp. (05 Mar 2000) |
| balsam of Peru | A thick, dark brown liquid balsam obtained from Toluifera pereirae (family Leguminosae), containing 60% cinnamein; used as a healing application to wounds. (05 Mar 2000) |
| Canada balsam | A yellowish liquid resin from the balsam fir, Abies balsamea (family Pinaceae); contains kinene and bornyl acetate; used for mounting histologic specimens and as a cement for lenses. Synonym: Canada turpentine. (05 Mar 2000) |
| Mecca balsam | An oleoresin from Commiphora opobalsamum (family Burseraceae), probably the myrrh of the Bible; used in perfumery. Synonym: Mecca balsam, opobalsamum. (05 Mar 2000) |
| Tolu balsam | A yellowish brown soft mass obtained from Toluifera balsamum (family Leguminosae), containing cinnamic and benzoic acids and esters; used as a stimulant expectorant. (05 Mar 2000) |
| balsam fir | medium-sized fir of northeastern North America |
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