MYO- 



203 



NAS- 



myosin (mfosin) n. [Gk. mys, muscle.] 

 A globulin of dead muscular tissue 

 (Phys.\ 



myotasis (mlot'asis) n. [Gk. mys, 

 muscle ; fast's, tension.] Muscular 

 tension or tonicity (phys.~). 



myotome (mi'otom) n. [Gk. mys, 

 muscle ; fame, a cutting.] One of 

 a series of hollow cubes formed in 

 the early vertebrate embryo (emb.) ; 

 a muscular metamere of primitive 

 vertebrates and segmented inverte- 

 brates (zoo/.). 



myotonia (mloto'ma) n. [Gk. mys, 

 muscle ; tonos, tension.] Muscular 

 tension or tonicity (pkys.\ 



myrmecophagous (mirmSkof'agus) a. 

 [Gk. myrmex, ant ; phagein, to 

 eat.] Ant-eating (zoo/.). 



myrmecophile (mir'mSkofil) n. [Gk. 

 myrmex, ant ; philos, loving.] A 

 guest insect in a nest of ants 

 (zoo/.). 



mynnecophyte (mir'mgkoflt) n. [Gk. 

 myrmex, ant ; phyton, plant.] A 

 myrmecophilous plant, or one that 

 benefits from ant inhabitants and 

 has special adaptations for housing 

 them (bot.). 



myrosin (mir'osin) n. [Gk. myron, 

 unguent.] An enzyme of mustard 

 seeds, acting upon glucosides (bot.). 



myxamoeba (mik'same'ba) n. [Gk. 

 myxa, slime ; amoibe, change.] A 

 mycetozoan spore in the amoebula 

 stage (zoo/.). 



myxoflagellate (mik'soflaj'glat) n. 

 [Gk. myxa, slime ; L. flagellum, 

 whip.] A flagellula or zoospore, 

 the stage in mycetozoan develop- 

 ment following the myxamoeba, and 

 which multiplies by fission (zoo/.). 



myxopodium (mik'sopo'dlum) n. [Gk. 

 myxa, slime ; pous, foot.] A slimy 

 pseudopodium (zoo/.). 



myxopterygium, mixipterygium. 



N 



nacreous (naTcreus) a. [Ar. nakir, 



hollowed.] Yielding or resembling 



mother-of-pearl (zoo/.). 

 nacrine (na'krin) n. [Ar. nakir, 



hollowed.] Mother-of-pearl colour 



(zoo/.). 



naevose (na'vos, ne'vos) a. [L. naevus, 

 spot.] Freckled ; spotted with con- 

 genital marks (zoo/.). 



nail (nal) n. [A.S. naegel, nail.] The 

 terminal horny plate of finger or 

 toe (zoo/.). 



nail bone, the terminal bone of finger 

 or toe. 



nanism (nan'izm) n. [Gk. nanos, 

 dwarf.] Dwarfishness. 



nanoplankton (nan'6'plang'ktSn) 

 n. [Gk. nanos, dwarf; plang- 

 ktos, wandering.] Microscopic 

 plankton. 



napiform (na'piform) a. [L. napus, 

 turnip ; forma, shape.] Turnip- 

 shaped ; appl. roots (bot.). 



narcotic (narkfit'ik) n. [Gk. narke, 

 numbness.] A drug which pro- 

 duces unconsciousness (zoo/.). 



nares (na'rez, na'rgz) n. plu. [L. 

 nares, nostrils.] Nostrils (zoo/.). 



nares, anterior, the openings of 

 the olfactory organ to the exterior 

 (zoo/.). 



nares, posterior, the openings of the 

 olfactory organ into the pharynx or 

 throat (zoo/.). 



narial (na'rial) a. [L. nares, nostrils.] 

 Pert, the nostrils (zoo/.). 



narial septum, the partition between 

 the nostrils (zoo/.). 



naricorn (nar'ik6rn) n. [L. nares, 

 nostrils ; cornu, horn.] The ter- 

 minal horny part of nostril of 

 Turbinares (zoo/.) ; nasal scale 

 (anat.\ 



nariform (narTform) a. [L. nares, 

 nostrils ; forma, shape.] Shaped 

 like nostrils (zoo/.). 



nasal (na'zal) a. [L. nasus, nose.] 

 Pert, the nose (zoo/.). 



nasion (na'zton) n. [L. nasus, nose.] 

 The middle of the nasofrontal 

 suture (anat.). 



Nasmyth's membrane, a trans- 

 parent sheet of membrane over 

 the enamel of the crown of a 

 mammalian tooth (phys.). 



nasoantral (na'zoan'tral) a. [L. nasus, 

 nose ; antrum, cavity.] Pert, nose 

 and maxillary cavity (anaf.). 



nasobuccal (na'zobuk'al) a. [L. nasus, 

 nose ; bucca, cheek.] Pert, nose 

 and cheek (anaf.) ; pert, nose and 

 mouth cavity (zoo/.). 



nasociliary (na'zosTltarl) a. [L. nasus, 



