

MYTACISM 



[fii'ga, mucus ; ayyeiov, 

 Inflammation of the duct 



the conspicuous tuft of hairs immediately over the 



mouth in certain diptera (Asilid<e). 



Mytacism (mit'-as-izm). See Mutacism. 



Vlytilotoxin {tnit-il-o-toks'-in) [/ztTi'/.of, mussel ; to$ikov, 



poison]. C 6 H 15 N0 2 . A poisonous ptomain that has 



been prepared from the common mussel ; it is similar 



to curara. See Ichthysmus, and Ptomains, Table of. 



Vlytilus {mif -il-us) [uvriAoc, a sea-mussel]. Mussel, 



a lamellibranchiate mollusc. M. edulis, the edible 



mussel. Under certain conditions, mussels are very 



poisonous, either because of some change in their 



juices, induced by modification of their environment, 

 or because a poisonous species is mixed with a non- 

 poisonous one. Edible mussels become poisonous 

 in filthv water, while poisonous ones are deprived 

 of their toxicity after a prolonged sojourn in good 

 water. 



lytome {nii'-tom). See Chromatin and 3/itome. 



lyurous i mi-u'-rits) [/"i'f, mouse ; ohpd, a tail]. Taper- 

 ing like the tail of the mouse ; a qualification applied to 

 the pulse when it is progressively growing feeble. 



lyxa [miks'-ah) \jivi-a, mucus]. Mucus. 



lyxadenitis (miks-ad-en-i' '-tis) \jivi-a, mucus; adtjv, 

 gland ; itic, inflammation]. Inflammation of a mucous 

 gland. 



lyxadenoma (mihs- ad -en -(/-mah). Synonym of 

 Myxoadenoma. 



lyxangitis ( miks-an-ji'-tis) 

 vessel ; tnc, inflammation], 

 of a mucous gland. 



[yxedema {miks-e-de' -mah) \jivl-a, mucus; oldijua, 

 edema]. Adult Sporadic Cretinism; Pachydermic 



i Cachexia: Cachexia strumipriva ; a disease charac- 

 terized by the collection of a mucus-like substance 

 in and about the connective tissue of the body, and 

 by atrophy of the thyroid gland. There is a char- 

 acteristic cretinoid physiognomy; the body is bulky 

 and unwieldy; the skin dry, scaly, and thickened. 

 ch is slow, monotonous, and guttural; there is 

 marked intellectual torpor, and insanity is likely to 

 develop. The disease is a chronic one, and the ten- 

 dency is from bad to worse ; it is more common in 

 women than in men, and usually occurs between the 

 ages of thirty and sixty -five. Nothing is known 

 positively as to the etiology. It is sometimes induced 

 by surgical interference with or by ablation of the 

 gland. A similar state has been produced in 



11 animals by extirpation of the thyroid gland. Im- 

 orovement, and, in some cases, cure has been achieved 

 oy the therapeutic administration of sheep's thyroids 

 >r their extracts, 

 /xedematoid (miks-e-de f -mat-oid) [jui^a, mucus; 

 ifyua, edema; eirfor, like]. Resembling myxedema, 

 vxedematous [miks-e-de' -mat-us) [jivga, mucus; 

 edema]. Pertaining to, affected with, or of 

 ; he nature of, myxedema. 



nxzmia. {//tifo-e'-me-ah) [fivi-a, mucus ; dtfia, blood]. 

 |\n accumulation of mucin in the blood. 

 » 'xeurysma ( miks-u-riz'-mah) [ui^a, mucus ; evpvveiv, 



n). Cavernous lymphangioma. 

 I miosis imiks-e-o'-sis) [ui^a, mucus]. A mucous 



^rge. 

 I xoadenoma (miks-o-ad-en-o'-mah) \jiii-a, mucus ; 

 land; bua, tumor]. An adenoma that has in 

 art undergone myxomatous degeneration ; an adenoma 

 f a mucous gland. 

 • xochondroma (miks-o-kon-dro' -mah) [ui^a, mu- 

 ^dpor, cartilage; bfia, tumor: //. , Myxochon- 

 r omata~\. A tumor containing mucous and cartilagi- 

 ous elements. 

 I xochondrosarcoma (miks-o-kon-dro-sar-ko> '-man) 

 ',-«. mucus; ;fow5/5oo, cartilage; aap^, flesh; bfia, 



II 



833 MYXOSPORIDIA 



tumor]. A mixed tumor containing myxomatous 

 and cartilaginous tissue and embryonal connective 

 tissue. 



Myxocylindroma (miks - o-sil '- in-dro / - mah) [/n\fa, 

 mucu- ; Ki'/tvfifior. cylinder; bfia, tumor]. A myxoma- 

 tous sarcoma in which the myxomatous tissue is dis- 

 posed in the meshes of the sarcoma. 



Myxocystitis [miks-o-sis-ti'-tis) \_uv!-a, mucus; Krone, 

 bladder; itic, inflammation]. Inflammation of the 

 mucous membrane of the bladder. 



Myxodes (miks-o / -dez) [uv-a, mucus; eldoc, like]. 

 Resembling mucus. 



Myxoendothelioma (miks -o- en-do- the -le-o / - mah) 

 \_iLvza, mucus; ivfiov, within; Qiff.ii, a nipple; bfia, 

 tumor : //. , Myxoendotheliomata~\. An endothelioma 

 that contains myxomatous tissue. 



Myxofibroma (niiks-o-fi-bro / -mah) \jtii(a, mucus ;fibra, 

 fiber; bfia, tumor: pi. , Myxofibromata\ A fibroma 

 that has in part undergone myxomatous degenera- 

 tion. 



Myxoglioma (miks-o-gli-o'-mah) [fii^a, mucus ; -ff a, 

 glue ; bfia, tumor : pl.,A/yxogliomata~\. A glioma with 

 myxomatous elements. 



Myxoid (miks'-oid) TfA^a, mucus ; sidoc, like]. Like 

 mucus. 



Myxoinoma (miks-o-in-o'-mah) [ui^a, mucus; Ig, a 

 fiber; bfia, a tumor]. A benign form of inoma, with 

 myxomatous elements. 



Myxolipoma (miks-o-lip-o' '-mah') [juvga, mucus ; fj-oc, 

 fat ; bfia, tumor : //., Afyxolipomata']. A fatty tumor 

 that has in part undergone myxomatous change. 



Myxoma (niiks-o 1 '-mah) [fii^a, mucus ; bua, tumor://. 

 3lyxomata\ A connective-tissue tumor the con- 

 sistency of which is similar to the jelly of Wharton of 

 the umbilical cord. It consists of a gelatinous, 

 mucin-containing intercellular substance, in which are 

 scattered peculiar branched or stellate cells. 



Myxomatodes (miks-o-mat-o / -dez) [jiv^a, mucus ; bfia, 

 tumor]. Characterized by myxomatous degeneration. 



Myxomatous (miks-c/ -mat-us) [fiii;a, mucus ; bfia, 

 tumor]. Of the nature of, or pertaining to, myxoma. 

 M. Degeneration, the same as mucoid degenera- 

 tion. It attacks epithelium and connective tissue, 

 giving rise to the production of a gelatinous substance 

 containing mucin. In epithelial tissue the cells only 

 are affected ; in connective tissue the intercellular sub- 

 stance. M. Degeneration of the Placenta. See 

 Mole. 



Myxomycetes (miks-o-mi-se'-tez) [fir$a, mucus ; iivktjc, 

 fungus]. A genus of slime-fungi found in decaying 

 wood and moss. 



Myxoneuroma (miks-o-nu-ro / -mah) [jivga, mucus ; 

 vrvpoi', nerve ; bfia, tumor: pi. , Myxoneuromata~\. I. 

 A glioma. 2. A neuroma with mucous elements. 



Myxopodia (miks-o-po J '-de-ah) \jiv!-a, mucus ; ~uiq, 

 (tzo6-) a foot]. In biology, a form of pseudopod, 

 protrusible, retractile, soft, fusing with neighboring 

 pseudopodia into a network, and, in many A'hizopoda, 

 often collecting by flowing together outside the body, 

 into small masses at the points where they meet with 

 food. They are characteristic of the Khizopoda and 

 most Radiolaria, and are to be distinguished from 

 Axopodia . 



Myxorrhea (miks-or-e'-ah) [fii$a, mucus ; poia, a flow]. 

 A copious mucous discharge. 



Myxosarcoma {niiks-o-sar-ko> '-mah) [ui-^a, mucus ; 

 oap!;, flesh ; bua, tumor]. A sarcoma that has in part 

 undergone myxomatous degeneration. 



Myxospore {miks' -o-spor) [//{fa, mucus; a-6/wc, seed] . 

 In biology, a spore produced in the midst of a gelat- 

 inous mass without a distinct ascus or basidium. 



Myxosporidia (tniks-o-spor-id' '■ e-ah) [ftvi-a, mucus; 



