sylviinæ

pl. [Mod. Lat. sylvi (a); Lat. fem. pl. adj. suff. -inæ.] Ornithology : alent to No. 2. 1. A sub-family of Turdidæ, approximately equiv 2. The typical sub-family of Sylviide (q. v.), with six genera and thirty-three species; most abundant in the Pale arctic region, very scarce in the Australian and Oriental regions; absent from America. [SYLVIA.] shady. "On as we move, a softer prospect opesCalm huts, and lawns between, and syl sylvan slopes." Words worth: Descriptive Sketches. 3. Growing in woods. *B. As subst.: A fabled deity of the woods; a satyr, a fawn. "From muse or sylvan was he wont to ask, In phrase poetic, inspiration fair." Scott: Don Roderick , vi. (Introd.) sỹl-vine, syl'-vīte, s . [Latin sal digestivus Min.: An isomeric soluble salt found in large crystals at Sta furth, Pru ia. Hardne , 20; specific gravity, 19-2; colorle ; luster, vitreous. Composition: Pota ium, 525; chlorine, 47.5=100. equal to the simple formula KCl. sym-, pref. [SYN-.] Sỹ mạ, s . [Gr. Syme , the daughter of Ialysus and Dotis, carried off by Glaucus.] Ornith.: A genus of Alcedinide, with two species from Papua and North Australia. begin with the same letter, a second letter is added to the symbol of one of these elements for the sake of distinction: thus Cl=chlorine, Hg=hydrargyrum (mercury), Pb=plumbum (lead), . The symbol also represents a definite quantity of the element: thus H always one part by weight of hydrogen, Hg=200 parts of mercury. [BOND, FORMULA, NOMENCLATURE, NOTATION.] 2. Theology : (1) A primitive name for the Creed, often occurring in the works of the early Fathers. The precise meaning of the word symbol in this sense is doubtful; but it probably had reference to the Creed as the common bond of Faith. The tradition that the name was given because each of the Apostles composed an article, is unsupported by evidence. (2) Sometimes applied to the elements in the Sacrament of the Eucharist. Mathematical symbols : There are four kinds of symbols employed in mathematics: (1) Those which stand for quantities; such as letters standing for numbers, time, space, or any of the geomet rical magnitudes. (2) Those of relation, as the signs, =>::::, ., which indicate respectively, the relations of equality, inequality, proportion, . (3) Those of abbreviation, as,..., for hence ,..., for because ; exponents and coefficients are likewise symbols of abbreviation, the symbol consisting in the manner of writing these numbers. (4) Symbols of operation, or those employed to denote an operation to be performed, or a proce to be followed; such are the symbols of algebra and the differential and integral calculus, ., which do not come under the preceding heads. Those of the third cla are generally regarded as symbols of operation. Symbols of operation are of tws kinds: (1) Those which indicate invariable proce es, and are, in all cases, susceptible of uniform. interpretations. This kind includes most of what are usually called the signs of algebra, as, -, x, +,. (2) Those which indicate general methods of proceeding without reference to the nature of the quantity to be operated upon.