MOR- 



198 



MUC- 



morphosis (m6r'fos!s, morfo'sis) n. 

 [Gk. morphosis, a forming.] The 

 manner of development of part or 

 organism (biol.}. 



morphotic (morfot'ik) a. [Gk. mor- 

 phosis, a forming.] Tissue-building 

 (phys.}. 



morula (mor'ula) n. [L. morum, a 

 mulberry.] A solid cellular globu- 

 lar mass, the first result of ovum 

 segmentation ; the stage in de- 

 velopment preceding the gastrula 

 stage (emb.}. 



morulation (morula'shun) n. [L. 

 morum, a mulberry.] Morula- 

 formation by segmentation (emb.}. 



morulit (mor'ulit) n. [L. morum, a 

 mulberry.] Nucleolus or kary- 

 osome (cyt.}. 



motor (mo'tor) a. [L. movere, to 

 move.] Pert, or connected with 

 movement ; appl. nerves (anat., 

 phys.}. 



motor areas, areas of the brain 

 where motion is supposed to be 

 correlated (phys.}. 



motor end-plates, the terminal ex- 

 pansions of nerves in muscle fibres 

 (anat.}. 



motor neurons, nerve cells with 

 appendages and branches, con- 

 cerned in the regulation of move- 

 ment (anat.}. 



motor ocull, the third cranial nerve 

 (anat.}. 



motorium (moto'rium) n. [L. movere, 

 to move.] Motor areas ; the part 

 of the nervous system where the 

 motorial sense is localized (phys.}. 



moult (molt)z/. [L. mutare,\.o change.] 

 To cast or shed periodically the 

 outer covering, whether of feathers, 

 hair, skin, or horns (zool.}. 



mouth part, a head or mouth 

 appendage of Arthropods or In- 

 sects (zool.}. 



mucific (musif'ik) a. [L. mucus, 

 mucus ; facere, to make.] Mucus- 

 secreting (phys.}. 



muclform (musiform) a. [L. mucus, 

 mucus ; forma, shape.] Resembling 

 mucus (phys.}. 



mucigen (mu'sTjgn) n. [L. mucus, 

 mucus ; Gk. genos, offspring.] The 

 substance of certain granules in 

 the cells of mucous membrane 

 (phys.}. 



mucilage (mu'sllaj) n. [L. mucus, 

 mucus.] A substance produced in 

 cell-walls of certain plants due to 

 changes in the cellulose or pectose 

 constituents, causing exudations of 

 gum when degeneration of the cell- 

 wall is excessive (bot.}. 



mucilage cell, a cell which secretes 

 mucilage (bot.}. 



mucilaginous (mii'silaj'inus) a. [L. 

 mucus, mucus.] Pert, containing, 

 resembling, or composed of muci- 

 lage ; appl. certain glands of joints 

 (anat.} ; appl. cells, ducts, canals, 

 slits (boL\ 



mucin (mu'sln) n. [L. mucus, mucus.] 

 A glucoproteid of mucus (phys.}. 



mucinogen (mustn'qjgn) n. [L. mucus, 

 mucus ; Gk. genos, offspring.] A 

 substance producing mucin by 

 reaction of alkalies (phys.}. 



muciparous (musip'arus) a. [L. 

 mucus, mucus ; parere, to beget.] 

 Mucus-secreting (phys.}. 



mucocutaneous (mu'kokuta'neus) a. 

 [L. mucus, mucus ; cutis, skin.] 

 Pert, skin and mucous membrane 

 (anat.}. 



mucodermal (mu'koder'mal) a. [L. 

 mucus, mucus ; Gk. derma, skin.] 

 Pert, skin and mucous membrane 

 (anat.}. 



mucoid (mu'koid) a. [L. mucus, 

 mucus ; Gk. eidos, like.] Pert, or 

 caused by mucus or mucilage ; 

 appl. degeneration (bot.} ; tissue 

 (anat.}. 



mucosa (muko'sa) n. [L. mucus, 

 mucus.] A mucous membrane 

 (anat.}. 



mucoserous (mu'kose'rus) a. [L. 

 mucus, mucus ; serum, whey.] 

 Secreting mucus and body fluid 



mucous (mu'kus) a. [L. mucus, 

 mucus.] Secreting, containing, or 

 pert, mucus ; appl. glands, sheaths, 

 tissue (anat}. 



mucro (mu'kro) n. [L. mucro, a sharp 

 point.] A stiff or sharp point 

 abruptly terminating an organ 

 (biol.}. 



mucronate (mu'kronat) a. [L. mucro, 

 a sharp point.] Abruptly termin- 

 ated by a sharp spine ; mucro- 

 niferous. 



mucronulate (mukron'ulat) a. [L. 



