nuclear 



Nut 



Fi'brils, chromosomes, cf. SPINDLE- 

 FIBRES ; ~ Fil'aiaent, the chro- 

 matin or chromatic filament ; ~ 

 Plate, see MOTHER-STAR ; ~ Re- 

 duc'tion, when a smaller number 

 of segments occur than at the 

 previous divisions of the parent- 

 cycle (Hartog) ; ~ Ring, the equa- 

 torial arrangement of chromo- 

 somes ; cf. MOTHER STAR ; ~ Sap, the 

 intermediate matrix (Schwarz) ; ~ 

 Spin' die, slender filaments from the 

 poles, and crossing the equator, 

 beginning in the skein stage, and 

 completed in the mother-star ; < 

 Star = ASTER ; ~ Threads = SPIN OLE- 

 FIBRES ; nu'cleated, having a nu- 

 cleus or nuclei ; Nu'clein, Stras- 

 burger's term for CHROMATIN. 



Nu'cleo-cen'trosomes (7iucleus, a ker- 

 nel), a term used by G. Karsten in 

 describing the nuclear division of 

 Psilotum iriquetrum, Sw. ; pro- 

 bably the same as Strasburger's 

 "Secretion bodies"; ~ Hy'alo- 

 plasm, Strasburger's word for 

 LININ ; ~ Idioplasm, the forma- 

 tive part of the nuclear hyalo- 

 plasm ; ~ Mi'crosomes ( Stras- 

 burger) = CHROMATIN ? 



nu'cleolate (nucleus, a kernel), pos- 

 sessing a nucleolus ; Nu'cleole, 

 Nucle'olus, a sharply defined 

 point in the cell-nucleus ; nucle'olo- 

 Nucle'olus, = ENDONDCLEUS ; Nu'- 

 cleophyses (<f>vu, I grow), tubular, 

 septate projections in certain 

 Fungi which correspond to the 

 base of the perithecium, and ulti- 

 mately become ascophyses ; Nu'c- 

 leoplasm ( irXacr/xa, moulded ) nuc- 

 lear protoplasm, the nucleo-hyalo- 

 plasm of Vines ; Nucleopro'teid 

 (+ PROTEID), any protein which is 

 a characteristic constituent of the 

 nucleus. 



Nu'cleus (Lat. a kernel), (1) the 

 kernel of an ovule or seed, the 

 NUCELLUS ; (2) an organised pro- 

 teid body of complex substance ; it 

 contains one or more nucleoli, and 

 divides either directly by FRAG- 

 MENTATION, or indirectly by KARYO- 



KINESIS, otherwise called MITOSIS; 



(3) the hilum of a starch granule ; 



(4) in Lichens, the disk of the apo- 

 thecium, containing asci ; (5) in 

 Fungi, the centre of the peri- 

 thecium ; (6) a clove or young bulb; 

 <~ Bar'rel = NUCLEAR BARREL ; ~ 

 of the Em'bryo Sac, the secondary 

 nucleus ; ~ of O'osphere, that in 

 the oosphere (female pronucleus) 

 with which a spermnucleus (male 

 pronuck'us) coalesces to form a 

 germ nucleus ; closed ~ , that kind 

 of nucleus which occurs in the 

 higher plants, cf. OPEN ~ ; gam'eto- 

 <~ , the nucleus of a gamete ; gen'era- 

 tive ~ , an active nucleus in karyo- 

 kinesis ; Germ ~, a nucleus result- 

 ing from the fusion of a male and 

 female pronucleus; cf. PRONUCLEUS; 

 O'pen ~ the central body of Phyco- 

 chromaceae, of much looser struc- 

 ture than in higher plants, and 

 destitute of true nuclear mem- 

 brane (Hieronymus) ; Rejec'tion ~, 

 sister-nuclei to the female nucleus 

 which play no part in fertilization ; 

 (Hartog) ; ~ Spin'dle = NUCLEAR 

 SPINDLE. 



Nucula'nium (nucida, a small nut), 

 Richard's term for a drupaceous or 

 baccate fruit containing more than 

 one stone or seed, adopted by 

 Lindley for a superior stony-seeded 

 berry, such as a grape ; Nu'cule, 

 Nuc'ula, (1) a diminutive of NUT- 

 LET ; (2) the female sexual organ of 

 Chara ; nuculo'sus (Mod. Lat.), con- 

 taining hard nut-like seeds. 



nucumenta'ceous, an error for NUCA- 



MENTACEOUS. 



nude, nu'diis ( Lat. naked), bare, 

 naked, in various senses. 



nudicau'lous, nudicau'lis (nudus, 

 naked, caulis, a stem), naked stem- 

 med, not leafy; nudius'culus (Lat.), 

 somewhat bare. 



nulliner'vis (nullus, none, nervus, a 

 nerve) = ENERVIS. 



nu'merous, numero'sus (Lat., very 

 many), in botany indefinite, not 

 readily counted ; the sign is oo. 



Nut, Nux (Lat.), a hard and i 



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