AMEL 



67 



AMIDO-ACID 



kmel (am'-el) [Anglo-French, amal, enamel]. An 

 old name for Enamel. 



A.melectic (am-el-ek'-tik). Affected with ameleia ; 

 apathetic. 



Ameleia [am-el-i' '-ah) [afd/.eia, indifference]. Morbid 

 apathy ; indifference. 



Amelia \ah-me'-le-ah) [a priv. ; fii'/x>q, a limb]. Ab- 

 sence of the limbs from arrested development, or 

 atrophy. 



Amelification [am-el-if-ik-a' 'shun) [M. E. , amell ; 

 facere, to make]. The formation of the enamel of 

 the teeth by means of the enamel cells — ameloblasts. 



Amelioration (am-el-yo-ra' -shun) [ad, to ; melior, 

 better]. Improvement or amendment, as in symp- 

 toms. 



Ameliorative (am-iV -yo-ra-tiv) [ad, to ; melior, better]. 

 Tending to produce an amendment of symptoms. 



Ameloblast (am-eV -o-blast) [Anglo-French, amal, 

 enamel; p.aarog, a germ]. In biology, an enamel- 

 cell, one of the cylinder cells covering the papilla 

 of the enamel organ, and forming a beautifully regular 

 epithelial layer that produces the enamel, the Mem- 

 brana adamantina of Raschkow. 



Amelus (am'-el-us) [a priv.; ui/.og, a limb]. A mon- 

 strosity without limbs. 



Amendment (am-end r -ment) [M. E., amendement]. 

 Improvement or recovery of health, more or less 

 complete. 



Amenia (ah-me'-ne-ah). See Amenorrhea. 



Amenomania [am-en-o-ma '-ne-ah) [amanus, agree- 

 able; uav<a, madness]. A mild form of mania in 

 which the symptoms are manifested under the form of 

 gayety, fondness of dress, exaggeration of social con- 

 dition, etc. ; a cheerful, or joyous delirium ; a morbid 

 elevation of the spirits. 



Amenorrhea (ah-men-o-re' '-ah) [d priv. ; ur/v, month ; 

 peciv, to flow]. Absence, irregularity, or suppression 

 of menstruation when it should normally be present. 

 The secretion may be retained, the result of congenital 

 or acquired atresia of some part of the lower genital 

 tract ; or it may not take place in consequence of an 

 imperfect development of the ovaries or uterus ; or it 

 may be suppressed because of some form of constitu- 

 tional disease, especially anemia. Primitive, is a 

 term applied to those cases in which the catamenia 

 have not appeared at the proper time, and Secondary, 

 to those in which the discharge has been arrested after 

 it has existed during the reproductive period of life, 

 ^menorrheal {ah-men-o-re' -al) [d priv. ; fir/v, month ; 



pieiv, to flow]. Pertaining to amenorrhea, 

 wment {a'-ment) [ab, from; mens, mentis, the mind]. 

 A person affected with amentia ; an idiot, 

 ment or Amentum (am'-ent, am-ent' -um) [amentum, 

 a strap or thong]. In biology, a scaly spike or catkin, 

 imentaceous (am-en-ta'-she-us) [amentum, a strap or 

 thong]. In biology, related in some way to an ament. 

 mentia {ah-men' -she-ah) [a priv. ; mens, mind]. De- 

 fective intellect ; a vague term synonymous with 

 idiocy or imbecility, 

 mentum [am-enf-um). See Ament. 

 menty (ah-men'-te) [a priv. ; mens, mind]. Amentia, 

 merican (am-er'-ik-an) [America]. Peculiar, or be- 

 longing, to America. A. Aloe. See Agave amer- 

 icana. A. Catarrh, a synonym for chronic post- 

 nasal catarrh. A. Centaury, the herb Sabbatia 

 annularis, employed as a substitute for gentian. A. 

 Columbo, the root of Frasera carolinensis. Tonic, 

 aperient ; in large doses, purgative. Dose of the fld. 

 ext. n\xx~3J. Proserin, a concentrated extract. Dose 

 gr. j-iij. Unof. A. Hellebore. See Veratrum 

 viride. A. Ipecac. See Gillenia. A. Ivy, the 

 twigs and bark of Ampelopsis quinquefolia. Alterative, 



tonic, astringent, and expectorant. Dose of the fld. 

 ext. tr\_xxx-3J. Ampelopsin, the concentrated ext. 

 Dose gr. ij-iv. Unof. A. Saffron. See Carthamus. 

 A. Senna. See Senna. A. Spikenard, the rhizome 

 of Aralia racemosa. Aromatic, diuretic and altera- 

 tive. Used in rheumatism, dropsy, and scrofulous 

 affections. Dose of the decoction indefinite. Unof. 

 A. Swiss Food, a variety of infant milk food with 

 the following composition: Water 5.68, fat 6. 81, 

 grape-sugar and milk-sugar 5-7&> cane-sugar 36.43, 

 starch 30.85, soluble carbohydrates 45.35, albuminoids 

 10.54, ash 1. 21. A. Valerian. See Cypripedium. 

 A. Wormseed. See Chenopodium. 



Amertume {am-ar-tum') [Fr.]. A disease of wine, 

 characterized by bitterness, and caused by a specific 

 bacillus. 



Ametabolic (ah-met-ab-ol' -ik) [a priv. ; uerafiu/.og, 

 changeable]. Not due to, or causing, or undergoing, 

 metabolism. 



Ametria [ah-mef-re-ah) [d priv. ; fi'/rpa, womb]. 

 Absence of the uterus. 



Ametrometer (ah-met-rom' '-et-er) [d priv. ; fikrpov, a 

 measure; o\pig, sight]. An instrument for measuring 

 ametropia. 



Ametropia (ah-met-rc/ -pe-ah) [d priv. ; (UTpov, a 

 measure; bipig, sight]. Ametropia exists when an 

 imperfect image is formed upon the retina, due to 

 defective refractive power of the media, or to abnor- 

 malities of form of the eye. In myopia the antero- 

 posterior diameter is too great, or the power of the 

 refractive media is too great ; hypermetropia (or hyper- 

 opia) is the exact reverse of the last ; astigmatism is 

 due to imperfect curvature of the cornea, or of the 

 retina, or to inequality of refracting power in different 

 parts of the lens ; presbyopia is due to inelasticity of the 

 lens, producing insufficient accommodation ; aphakia, 

 or absence of the lens, produces both insufficient re- 

 fracting power and loss of accommodation. 



Ametropic (ah-met-rop' -ik) [d priv. ; uirpov, a measure ; 

 bipig, sight]. Affected with or pertaining to ame- 

 tropia. 



Amianthium {am-e-an' -the-uni) [afdavrog, unspotted ; 

 avdoc, flower]. A genus of liliaceous or melantha- 

 ceous plants. A. musctz toxicum ("fly poison"), a 

 handsome flowering plant of the United States; has 

 properties not unlike those of veratrum. Unof. 



Amiantus (am-e-an'-tus), or Amianthus {am-e-an'- 

 thits). See Asbestos. 



Amic {am'-ik) [ammonia']. Pertaining to an amin, or 

 having the nature of an amin. 



Amici Prism (am-e'-che prizm). See Prism. 



Amicrobic (ah-mi-kro^-bik) [a priv. ; microbion, 

 microbe]. Not due to, or associated with, microbes. 



Amid {am' -id) [ammonia]. . A chemical compound 

 produced by the substitution of an acid radical for one 

 or more of the hydrogen atoms of ammonia. The 

 amids are primary, secondary, or tertiary, according 

 as one, two, or three hydrogen atoms have been 

 so replaced. They are white crystalline solids, often 

 capable of combining with both acids and bases. A. 

 Bases. See Amins, Primary. 



Amidin (am'-id-in) [Fr. , amidon, starch]. Starch 

 altered by heat into a homy, transparent mass ; soluble 

 starch ; that part of starch which is soluble in water. 



Amidins (am' -id-inz) [ammonia]. Mono-acid bases 

 produced from the nitrites by heating with ammonium 

 chlorid. In the free condition thev are quite unstable. 

 They contain the group C. NH.NH.,. 



Amido-acetic Acid (am'-id-o-as-e'-tih as'-id). See 

 Glycocoll and Glycin. 



Amido-acid (am'-id-o-as'-id) [ammonia; aeetum, 

 vinegar]. An acid containing the amido-group, NH,. 



