NOS 



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NUC 



nosography, n., noz-tig'raf-i (Gr. 

 nosos, disease ; grapho, I write), 

 the scientific description of dis- 

 eases. 



nosology, n., noz-ol'ti-ji (Gr. 

 nosos, disease ; logos, discourse), 

 the systematic arrangement of 

 diseases ; in bot., the study of 

 diseases peculiar to plants ; the 

 branch of medicine which treats 

 of the systematic arrangement of 

 diseases: nosological, a., ndz'd- 

 Itidj'-ik'al, pert, to : nosologist, 

 n., noz'dl'd-jist, one skilled in 

 the systematic arrangement of 

 diseases. 



nosophyta, n., noz-of^U-d (Gr. 

 nosos, disease ; phuton, a plant), 

 a disease caused by the growth 

 or development of such parasitic 

 plants as Fungi, in an animal 

 tissue. 



nostalgia, n., nost-dlf-i-d (Gr. 

 nostos, return, especially home ; 

 algos, pain), a violent desire to 

 return to one's native country ; 

 home- sickness. 



NostochinesB, n. plu., nds'-td'Hn'' 

 8-e (perhaps Gr. nostos, return, 

 especially home; och$o, I bear or 

 carry), a tribe or Sub-order of Algse, 

 composed of moving filaments 

 immersed in a gelatinous matter: 

 Nostoc, n., ntis'tdk, a genus of 

 Algse forming a kind. of mould ; 

 one of the gelatinous, puckered, 

 olive-coloured masses often found 

 strewed on gravel and short grass 

 after a few hours' rain. 



Notobranchiata, n. plu., not'-o- 

 brdngk-i'dt'-a (Gr. notos, the 

 back; brangchia, gills), a division 

 of the Annelida, so named from 

 carrying their gills upon the back. 



aotochord, n., not'-o-kdrd (Gr. 

 notos, the back; dhorde, a chord), 

 in zooL, a delicate fibrous band 

 or rod developed in the embryo 

 of vertebrates immediately be- 

 neath the spinal cord, usually 

 replaced in the adult by the 

 vertebral column ; the ' chorda 

 dorsalis. ' 



notoglossus, n., not f -o>gl$s'-us 

 (Gr. notos, the back ; glossa, 

 a tongue), a muscle of the 

 tongue consisting mainly of 

 longitudinal fibres, lying on the 

 upper surface of the tongue, 

 immediately beneath the mucous 

 membrane ; the ' lingualis super- 

 fieialis. ' 



Notopodium, n., notf-o-pod^-um 

 (Gr. notos, the back ; podes, feet), 

 in zooL, the dorsal division of 

 one of the foot-tubercles of an 

 Annelid ; the dorsal oar. 



NotorhizesB, n. plu., not'o-riz'-Z-e 

 (Gr. notos, back ; rhiza, a root), 

 a Sub-order of the Ouciferse, so 

 named because in the plants the 

 cotyledons are incumbent, and 

 the radical dorsal, that is, applied ; 

 to their back as in Shepherds' 

 purses ; radicles on the back of 

 the cotyledons : notorhizal, a., 

 ndt'd'riz'dl, having the radicles 

 in the embryonic plant on the 

 back of the cotyledons. 



nucamentacesB, n. plu., nukf-d- 

 m$nt'd''Se'e(~L.nucdmenta, things 

 which hang down from trees in 

 the shape of nuts, fir-cones, etc. ), 

 in bot., one of the divisions of 

 the Cruciferae founded on the 

 seed-vessels : nucamentaceous, 

 a., nuk'd-mZnt'd'shus, having a 

 dry monospermal fruit, as certain 

 Cruciferse ; producing nuts. 



nuciferous, a., nu-sif'-gr-us (L. 

 nux, a nut, nucis, of a nut ; fero, 

 I bear), bearing or producing 

 nuts. 



nucleus, n., nuk'tt'us, nuclei, n. 

 plu., nuk'-le-i (L. nucleus, a small 

 nut, a kernel from nux, a nut), 

 anything round which matter has 

 accumulated ; the solid centre of 

 any nodule or rounded mass ; the 

 kernel of a nut ; the solid or 

 vesicular body found in many 

 cells ; the body which gives 

 origin to new cells ; in zool. , the 

 solid rod or band-shaped body 

 found in the interior of many of 

 the Protozoa, having sometimes 



