HYMENOMYCETES 



588 



HYPERALGESIC 



brane ; fiakania, softness]. An abnormal softening of 

 membranous tissues. 



Hymenomycetes (hi-men-o-mi-se' -tes) [yfir/v, mem- 

 brane ; /iVKTjg, fungus]. An order of fungi having 

 a hymenium or umbrella. All the edible mush- 

 rooms belong to this class. 



Hymenoptera {lii-men-op* '-ter-ah) [v/ii/v, membrane ; 

 •KTepdv, wing]. An order of insects distinguished by 

 two pairs of membranous wings. It includes ants, 

 bees, wasps, ichneumons, flies, etc. 



Hymenopterous (hi-men-op* '-ter-us) [yfiijv, membrane ; 

 irrepdv, wing]. In biology, applied to insects having 

 membranous wings. 



Hymenorrhaphy (hi-men-or' -a-fe) [yp-rjv, hymen ; 

 patyr], suture]. Closure, more or less complete, of the 

 vagina by suture at the hymen. 



Hymenotome {hi-meri '-o-tom) [_v/ui/v, membrane ; re/x- 

 veiv, to cut]. A cutting instrument used in operations 

 upon membranes. 



Hymenotomy (hi-men-ot' '-o-me) [hfiTjv, membrane ; 

 TEfiveiv, to cut]. I. Surgical incision of the hymen. 

 2. Dissection or anatomy of membranes. 



Hyo- (hi'-o-) \you6rjg, hyoid]. A prefix denoting 

 attachment to or connection with the hyoid bone. 



Hyoepiglottic (Jii-o-ep-e-glot 1 '-ik) [yoeior/g, hyoid ; etti- 

 yTMTTig, epiglottis]. Relating to the hyoid bone and 

 the epiglottis. 



Hyoglossal (hi-o-glos'-al) [voetdqg, hyoid; y'^uaaa, 

 tongue]. Pertaining to the hyoglossus. Extending 

 from the hyoid bone to the tongue. 



Hyoglossus {Jii-o-glos'-us). See Muscles, Table of. 



Hyoid {Jii'-oid) [yoeidi/g, similar to the Greek, letter 

 upsilon]. Having the form of the Greek letter 

 upsilon. H. Bone, a bone situated between the root 

 of the tongue and the larynx, supporting the tongue 

 and giving attachment to its muscles. See Bones, 

 Table of. H. Fossa. See Fossa. 



Hyoplastron (hi'-o-plas-tron). See Hyosternal. 



Hyoscin (Jii'-os-in) \yoaKvap.og, henbane], C 17 H 23 N0 3 . 

 A viscous liquid found in henbane ; it is a good 

 soporific and valuable mydriatic. Dose, T ^<j to -fa of 

 a grain. See Hyoscyamus. 



Hyoscyamin {hi-o-sV '-am-in) [yoanvafj,og, henbane], 

 C n H.j 3 N0 3 . An alkaloid occurring in the seeds of 

 Hyoscyamus niger, in Atropa belladonna, and in Datu- 

 ra stramonium. It is isomeric > with atropin, and 

 identical with daturin and duboisin. It crystallizes 

 in shining needles, and melts at 108.5 C. It is a 

 mydriatic, narcotic, and sedative. Dose, gr. T3 ^ 5 , 

 gradually and cautiously increased, even to 1 grain. 

 See Hyoscyamus. 



Hyoscyamus (hi-o-si'-am-us) \yg, hog; Kvatiog, bean]. 

 Henbane. The older leaves of H. niger. It contains 

 an alkaloid, hyoscyamin, isomeric with and similar to 

 atropin ; also, a derivative, hyoscin, C ]7 H 23 NO s . It 

 is an excellent narcotic, calmative, and hypnotic, less 

 irritating than belladonna and stramonium, and is use- 

 ful in mania and the delirium of fevers. Hyoscyamin 

 is useful whenever atropin is indicated. It is a powerful 

 but uncertain mydriatic. H., Abstract. Dose gr. 

 iij-v. Unof. H., Ext. (B P.). Dose gr. ij-v. H., 

 Ext., Alcoholic (of uncertain strength). Dose gr. j. 

 H., Ext., Fid. Dose tr\v-xx. H., Succus (B. P.) 

 Dose 3-ss-j. H., Tinct., 15 per cent, in strength. 

 Dose 3J-iv; as a hypnotic 3 ss-j. Hyoscyamin. 

 sulph.* (C 17 N 2:i NO,)N, 2 S0 4 . bose,hypodermatically, 

 gr. Tirr - ^ 1 )'' by tne mouth gr. ^-j. Injectio hyos- 

 cyamin hypodermicae. Strength I in 120. Dose 

 iry-iv. Hyoscin. hydrobrom. Unof. Dose, gr. 

 rlv—fhs- Injectio hyoscin. hydrobromat. hypo- 

 dermicae. ^percent. Dose TT\j-ij. 



Hyosternal (lii-o-ster' '-nal) [voeidi/g, hyoid ; arkpvov, 



sternum]. I. Relating to the hyoid bone and the 

 sternum. 2. In biology, the second lateral piece of 

 the plastron of a turtle ; it is also called Hyoplastron. 



Hyp {hip) \ytr6, under]. A popular name for hypo- 

 chondriasis, or persistent depression of spirits ; hypo. 



Hypacousis, Hypacusia, Hypacusis, or Hypakusis 

 (hip-ak-u' '-sis) \inv6, under; ciKovaig, hearing]. 

 Hardness of hearing from defect of the auditory nerve. 



Hypaesthesia {hip-es-the' -ze-ah). See Hypeslhesia. 



Hypalbuminosis (hip-al-bu-min-o' '-sis) \vtt6, under ; 

 albumen~\. Morbid diminution in the proportion of 

 albumin in the blood. It is caused by anything that 

 gives rise to an increased consumption of albumin on 

 the part of the organism. 



Hypalgesia [liip-al-je' -ze-ah) [imd, under; aAyrjnig, 

 painfulness]. Diminished sensitiveness to pain. 



Hypalgia {Jiip-al' -je-ah) [vivo, under; akyog, pain]. 

 Slight or moderate pain ; diminished sensibility to pain. 



Hypalgic (Jtip-al' -jik) \_vtt6, under ; ahyog, pain]. 

 Slightly painful ; experiencing slight pain. 



Hypanisognathism [Jiip-an-is-og' ' -nath-izm) [vtto, un- 

 der; aviaog, unequal, uneven; yvaBog, the jaw]. In 

 biology, a lack of correspondence between the teeth 

 of the opposite jaws. Cf. Anisognathism and 

 Epanisognathism. 



Hypanisognathous (Jiip-an-is-og' -na-thus) [wr<5, un- 

 der; aviaog, unequal, uneven; yvaBog, the jaw]. In 

 biology, having the upper teeth broader than the lower. 



Hypanthium [hip-an'-the-um) \yix6, under; avQog, a 

 flower: pi., Hypanthia"]. In biology, an enlarged 

 receptacle. 



Hypanthodium (hip-an-tho'-de-um [vir6 f under ; av- 

 dog, a flower; eidog, form]. See Synconium. 



Hypapophysis {Jiip-ap-ojf '-is-is) \vtc6, under; o.tt6$- 

 [voig, apophysis: pi. , Hypapophyses~\. An anterior 

 or ventral apophysis from the centrum of a vertebra in 

 the human skeleton ; the atlas is held by some to have 

 an hypophysis, which is blended with the ring of that 

 vertebra. 



Hypapoplexia {hip-ap-o-pleks' '-e-ah) [vtt6, under : a,iro~ 

 Tv?j/^la, apoplexy]. A slight apoplexy. 



Hypatonia (liip-at-o' '-ne-ah) [vit6, under ; arovia, at- 

 ony] . A slight amount of atony. 



Hypemia {Jiip-e'-me-ah). See Hyphemia. 



Hyper- [hi'-per-) [ynep, above]. A Greek prefix sig- 

 nifying above, beyond, or excessive. 



Hyperacidity {hi-per-as-id' -it-e) \ynep, over; acidum, 

 acid]. Excess of acidity. 



Hyperacousis, Hyperacusia, Hyperacusis, or Hy- 

 perakusis (hi-per-ak-u' '-sis, hi-per-ak-u' -ze-ah) \_hiTep t 

 over; anovoig, hearing]. Morbid acuteness of the 

 sense of hearing; auditory hyperesthesia. Also, a 

 highly developed capability of the discernment of pitch 

 and timbre of musical sounds. 



Hyperactivity {hi-per-ak-tiv' -it-e) [vnep, over ; agere, 

 to do]. Excessive or abnormal activity. 



Hyperadenosis {hi-per-ad-en-o / -sis) \_v~ip, over; aofjv, 

 gland; vdaog, disease]. Enlargement of the lymph- 

 glands ; Hodgkin's disease. 



Hyperaemia {Jii-per-e-me-ah). See Hyperemia. 



Hyperaesthesia (hi-per-es-thc' '-ze-ah). See Hyperesthe- 

 sia. 



Hyperakusis (Jii-per-ak-u' -sis). See Hyperacousis. 



Hyperalbuminosis (hi-per-al-bu-min-o'-sis) [ixip, 

 over; albumen, albumin]. An increase in the amount 

 of albumin in the blood, which maybe either relative 

 or absolute. It is often due to the excessive ingestion 

 of albuminous food, with insufficient exercise. 



Hyperalgesia {hi-per-al-je' -ze-ah) [/-//>, over ; lihyn- 

 mg, pain]. Excessive sensibility to pain. 



Hyperalgesic (hi-per-al-Je' '-zih) [J'TTtp, over; alyyoit, 

 pain]. Exhibiting or appertaining to hyperalgesia. 



