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kinetogenesis (kine'toje'n'e'sis) n. 

 [Gk. kinein, to move ; gignesthai, 

 to produce.] The evolution theory 

 that animal structures have been 

 produced by animal movements 

 (biol.}. 



kinetonucleus (klne'tonu'kleus) n. 

 [Gk. kinein, to move ; L. nucleus, 

 kernel.] The secondary nucleus, 

 in forms such as Trypanosomes, 

 in close connection with the flag- 

 ellum and undulating membrane ; 

 cf. trophonucleus (cyt.}. 



kinetoplasm (kine'toplazm) n. [Gk. 

 kinein, to move ; plasma, some- 

 thing formed.] An iron-contain- 

 ing nucleo-protein forming a source 

 of energy to Nissl granules of 

 nerve-cells (phys.}. 



kinoplasm (km oplazm) n. [Gk. 

 kinein, to move ; plasma, some- 

 thing formed.] The substance of 

 which attraction-sphere, astral 

 rays, and spindle-fibres consist ; 

 archoplasm (cyt.}. 



klasma-plates (klas'ma-plats) n. plu. 

 [Gk. klasma, fragment ; L. platus, 

 flat.] Small parts of compound 

 ambulacral plates separated by 

 growth pressure in certain Echi- 

 noids (zool.}. 



kleistogamous (kllstog'amus) a. [Gk. 

 kleistos, closed ; gamos, marriage.] 

 Fertilized in closed flowers (bot.}. 



knee (ne) n. [A.S. cnecnu, knee.] 

 The joint between femur and tibia 

 (zool.} ; a root-process of certain 

 swamp-growing trees (bot.}. 



knot (not) n. [A.S. cnotta, a knot.] 

 In wood, the base of a branch sur- 

 rounded by new layers of wood 

 and hardened by pressure (dot.) ; 

 in nuclear-meshwork, the small 

 particles of chromatin where the 

 meshes cross (cyt.}. 



labellate (labeTat) a. [L. labellum, 



small lip.] Furnished with labella 



or small lips (dot., zool.}. 

 labelloid (labeToid) a. [L. labellum, 



small lip ; Gk. eidos, resemblance.] 



Like a labellum. 

 labellum (labeTum) n. [L. labelling 



small lip.] The lower petal, 

 morphologically posterior, of an 

 orchid (bot.} ; a small lobe beneath 

 the labrum in certain insects ; one 

 of the proboscis lobes in certain 

 insects (zool.}. 



labia (la'bia) n. plu. [L. labium, lip.] 

 Lip-like structures (anat.}. 



labia cerebri, the margins of the 

 hemispheres of the brain overlap- 

 ping the corpus callosum (anaf.}. 



labia majora, the outer lips of the 

 vulva (anat.}. 



labia minora, the inner vulvular 

 lips (anat.}. 



labial (la'blal) a. [L. labium, lip.] 

 Pert, or resembling a lip (zool.}. 



labial palp, the lobe-like structure 

 near the mouth of a mollusc ; the 

 jointed appendage on the labium 

 of Insects (zool.}. 



labiate (la'blat) a. [L. labium, lip.] 

 Lip-like ; possessing lips or 

 thickened margins (zool.} ; having 

 the limb of the calyx or corolla so 

 divided that the one portion over- 

 laps the other (bot.}. 



labiatiflorous (la'biatiflo'rus) a. [L. 

 labium, lip ; flos, flower.] Having 

 the corolla divided into two lip- 

 like portions (bot.}. 



labidophorous (lab'idof'orus) a. [Gk. 

 labis, forceps ; pherein, to carry.] 

 Possessing pincer-like organs 

 (zool.}. 



labiella (la'bleTa) n. [L. labium, lip.] 

 One of the mouth organs of Myria- 

 pods (zool.}. 



labiodental (la'biodgn'tal) a. [L. 

 labium, lip ; dens, tooth.] Pert. 

 lip and teeth ; appl. to an em- 

 bryonic lamina (emb.}. 



labium (la'bium) n. sing, of labia ; 

 the fused second maxillae of Insects 

 (*/.). 



labral (la'bral) a. [L. labrum, lip.] 

 Pert, a labrum (zool.}. 



labrum (la'brum) n., labra (la'bra) 

 plu. [L. labrum, lip.] The anterior 

 lip of Insects, Crustaceans, and 

 certain other Arthropods ; the outer 

 margin of the mouth of a gastropod 

 shell (zool.}. 



labyrinth (lab'frinth) n. [L. laby- 



rinthus, labyrinth.] The complex 



internal ear, bony or membranous ; 



the portions of kidney cortex with 



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