polygenic (polijenik)

[ The granting of the Polygenist premises does not, in the slightest degree, nece itate the Polygenist conclusion. Huxley , Critiques and Addre es, p. 163. II. a . Same as polygenous . poly gen is tic (pol i-je-nis'tik), a . [ polygenist + -ic .] Having independent origins, as the races of man or the domestic animals; of or pertaining to polygeny. polygenous (pō-lij'e-nus), a . [ πολύς , many, + γένος, kind: see genus , -genous.] 1. Containing or consisting of many different sorts or kinds of things; heterogeneous; composite: as, a polygenous mountain (one made up of different strata of rocks).-2. Of or pertaining to polygeny. IMG:content-0582.jpg:[graphic] polygonal (po-lig'ō-nal), a . [= F. Pg. poly go- nal ; as polygon + -al .] Having the form of a polygon; having many angles. - Polygonal num- bers, in arith ., the succe ive sums from unity up of a series of numbers in arithmetical progre ion beginning of the series is 1, the sums of the terms give the triangular numbers; when the common difference is 2, the sums give the square numbers; when it is 3, the sums give the pentagonal num- bers, and so on. (See figurate num- IMG:content-0583.png:[blocks in formation] IMG:content-0584.png:[ocr errors] are understood to be called polygonal numbers from po e ing the property ing to a certain rule in the form of that polygonal figure to which it belongs. In the cut, 5, 12, and 22 points are shown arranged in pentagonal forms, 5, 12, and 22 being pentagonal numbers. polygon ate (po-lig'ō-nāt), a . [ πολύς , many, + γόνυ jointed: said of some plants and animals. Thomas, Med. Dict. Polygon ateæ (pol i-gō-nā tērē), n . pl . [NL. (Bentham and Hooker, 1883), Polygonatum + -eæ .] A tribe of liliaceous plants, typified by the genus Polygonatum , the Solomon's-seal. It is characterized by a herbaceous leafy stem, nearly or quite unbranched, an inflorescence of axillary flowers or a ra- ceme, rarely a panicle, anthers introrsely dehiscent, the fruit a berry, and anatropous ovules. It includes 7 genera and about 42 species. See Polygonatum , Smilacina , Μαί- an the mum , Strep top us . Polygonatum (pol-i-gon'a-tum), n. [NL. (Tournefort, 1700), polygonatum , πολύς , many, + γόνυ (γονατ-), knee.] A genus of liliaceous plants, the Solomon's-seal, type of the tribe Polygo- nateæ . It is characterized by the nodding cylindrical one or two or rarely more together at an axil, and by the undivided style and small stigma. There are 23 spe- cies, widely scattered through all north temperate re- gions. They bear a single erect leafy stem from a horizon- tal thickened deep-buried or creeping rootstock, which is terminated by the upturned bud for the stem of the previous similar stems. These seal-like impre ions gave the rootstock great fame for magic powers in the middle ages, as able to seal up and heal all wounds, having been stamped with the seal of Solomon, or or of the Virgin Mary, whence the popular names Solomon's - seal and Our -Lady's- seal , the former of which is still in use. (See Solomon's- seal and lady's - seal .) From its bell-like flowers, resem- bling a string of tintinnabula, by the monks ascribed to King David, the common English species, P. multiflorum , has derived the name David's - harp ; also, from its upward series of leaves, ladder - to - heaven , and, from resemblances to other plants, lily - of - the - mountain and fraxinell . polygoneutic (pol i-gō-nū'tik), a . [ γονεῖσθαι , multiply, πολύς , many, + γόνος , off- spring.] In entom ., many-brooded; having sev- eral broods during a single year. polygoneutism (pol i-gō-nū tizm), n. [ poly- goneut -ic + -ism .] The state or character of being polygoneutic. poly go no metric (pol-i-gon-ō-met'rik), a . polygonometr -y + -ic.] Pertaining to poly go- nometry. poly go no me try (pol i-go-nomʼet-ri), n . [= F. polygonométrie , polygon ), + -μετρία , μετρεῖν , measure.] An extension of trigonometry to polygons; the doctrine of polygons, as trigonometry is the doctrine of triangles. Poly gonopod a (pol"i-gō-nop' πούς ( ποδ- ) = E. foot .] The sea-spiders: a synonym of Podo- somata and Pycnogonid a . poly go no scope (pol'i-gon-o-skop), n. [ σκοπεῖν , view.] An instrument of the nature of the kaleidoscope, used to produce a great variety of geometrical patterns by the reflections from two mirrors supported in a case and connected by an ad- just able hinge; specifically, a compact form of carpet-exhibitor for the multiple reproduction ish calyx with four, five, or six imbricated segments, an ovary with one cell and one orthotropous ovule, two or of a pattern. three styles or style-branches, from six to nine perigynous stamens, and stipules with each pair united into a cylindri about 750 species, belonging to 6 tribes and 30 genera, varying in habit according to distribution, the numerous herbaceous species being mainly in temperate or montane regions, represented by shrubs in western Asia and the Mediterranean, and by trees in tropical America. They bear alternate and usually entire leaves, generally with dilated and clasping petiole-base. The fruit is a small seed-like nut, three-angled or compre ed, and inclosed by the withering, persistent flower. Many of the species are weedy plants, especially in the large genera Rumex (dock), Eriogonum , and Polygonum (the type). The most useful genera are Fagopyrum (buckwheat) and Rheum (rhubarb). See also Oxyria , Coccoloba , Kœnigia . polygonaceous (pol i-gō-nā'shius), a . like or belonging to the Polygon aceæ . polygon ous (po-lig'ō-nus), a. [ polygon . ] Polygonal. Polygonum (po-lig'ō-num), n . [NL. (Tourne- fort, 1700), polygonum , polygon .] A large genus of plants, type of the order Polygon aceæ and tribe Eupolygoneæ . It is characterized by a stem with swollen joints and conspicuous stipular sheaths, flowers with eight or six stamens, two or three styles, and a five-parted and commonly colored perianth, re- maining with little change around the black and shining or opaque hard three-angled or compre ed nutlet, which is of nearly the same length as the sepals. The species are variously estimated at 150 to 300, widely distributed, and some of them nearly or quite cosmopolitan. They are most abundant in the northern hemisphere, but also extend into arctic, alpine, and tropical regions. Although of poly- morpho us habit, they are easily distinguished by the swol- Polygordius (pol-i-gôr' der, 1866), πολύς , many, + Γόρδιος , Gordius w (with ref. to the Gordian knot): see Gordian , Gordius .] The typical genus of the family Polygordiidæ , referred to the annelids as type of a group, Arch i annelid a . P. purpure us and P. lute us are two species, the former hermaphro- ditic, the latter diœcio us. polygram (pol'i-gram), n. [= Pg. polygramo = pol i gramma , πολύγραμμος , marked with line, γράμμα , a mark, line, etc., γράφειν , write.] many stripes, πολύς , many, + γραμμή , a stroke, A figure consisting g of many lines. poly grammatic poly grammatic (pol (pol"i-gra-mat'ik), a . [As poly- gram + -atic2 (cf. grammatic ).] Pertaining orre- lating to poly grams.- Poly grammatic telegraph, polygraphic (pol-i-graf'ik), a. [= F. poly- graph i que = Pg. polygraphico ; as polygraph + -ic.] 1. Pertaining to multiplication of copies of a writing: as, a polygraphic instrument.-2. Done with a polygraph: as, a polygraphic copy or writing.- Polygraphic paper. See paper . poly graphical (pol-i-graf'i-kal), a . graphic + -al.] Same as polijgraphic . polygraphy (po-lig'ra-fi), n. [= F. polygraphie = Sp. poligrafía = Pg. polygraph i a = It. pol i- grafia , πολυγραφία , a writing much, πολύς , much, + γράφειν , write.] 1. Volumi- nous writing. IMG:content-0585.png:[blocks in formation] polygyn polygyn (pol'i-jin), n. [ Same as In certain cantons of Media, according to Strabo, poly gunia was authorised by expre law, which ordained every inhabitant to maintain at least seven wives. M'Lennan , Primitive Marriage (ed. 1865), viii. Polygynia2 (pol-i-jin'i-ä), n . pl . [NL., γυνή , female (in mod. bot. pistil).] One of the orders in the fifth, sixth, twelfth, and thirteenth cla es of the Linnean system, comprehending those plants which have flowers with more than twelve styles or stigmas. polygynian (pol-i-jin'i-an), a . [ -an .] Same as polygynous . polygynic (pol-i-jin'ik), a. [ nous. polygynist (po-lij'i-nist), n. [ polygynæcial (pol i-ji-ne's hal), a. [ πολύς, many, + NL. gynæcium + -al.] In bot., formed by the united pistils of many flowers: said of multiple fruits. polygynous (po-lij'i-nus), a. [= F. polygyne; as polygyn + -ous.] 1. In bot., having many styles; belonging to the order Polygynia.-2. Polygamous, as a male; having more than one female as wife or mate. Few, perhaps, would stigmatize a legal polygynous connexion as impure, however they might disapprove of the law and of the state of society in which such a law was established. H. Sidgwick, Methods of Ethics, p. 337. IMG:content-0586.png:[blocks in formation] generator. - Regular polyhedron, a polyhedron that has all its summits alike in all respects and composed of plane angles of the same magnitude: sometimes understood as excluding the stellated polyhedra. See cut under octa hedron. Semi-regular polyhedron, a polyhedron all summits of which are alike, while the plane angles which compose the summits are not all alike. - Stellated polyhedron, a polyhedron that inwraps its center more than once.