GLOSSARY. 



119 



recesses in the integument of the 

 pupa. 



Ob'turator (Lat. obtitro, I stop up). 

 That which stops up ; a name ap- 

 plied to two muscles, which arise 

 near an opening in the pelvis called 

 the obturator or thyroid foramen. 



Obtusan'gular (Lat. obtu'sus, blunt ; 

 an'yulus, an angle). Having angles 

 larger than right angles. 



Obtu'se (Lat. obtu'sus, blunt). In 

 geometry, applied to angles which 

 are larger than right angles. 



Ob'verse (Lat. ob, opposite ; verto, I 

 turn.) The side of a coin which 

 has the face or head on it. 



Ob'volute (Lat. ob, against ; volvo, I 

 roll). Rolled into ; in botany, ap- 

 plied to an arrangement of leaves 

 in buds in which the margins of 

 one leaf alternately overlap those 

 of the leaf opposite to it. 



Occiden'tal (Lat. oc'cidens, the west ; 

 from ob, down ; cado, I fall, in 

 allusion to the setting of the sun). 

 Relating to or produced in the 

 west. 



Occipital (Lat. oc'ciput, the back of 

 the head). Belonging to the back 

 of the head. 



Oc'ciput (Lat. ob, opposite ; cap'ut, 

 the head). The back part of the 

 head. 



Occulta'tion (Lat. occul'to, I hide). 

 A hiding ; the concealment from 

 sight of a star or planet, by the 

 interposition of another body. 



Ocellus (Lab. oc'ulus, an eye). A 

 little eye ; one of the small eyes of 

 which the compound organs of 

 vision are formed in many inverte- 

 brate animals. 



Ochle'sis (Gr. OX^QS, ccklos, a multi- 

 tude). A crowding together. 



Ochre (Gr. wxpos, uchros, pale). A 

 fine clay, coloured by more or less 

 peroxide of iron. 



O'chrea or O'crea (Lat. a boot). In 

 botany, the tube formed in some 

 plants by the growing together of 

 the stipules, through which the 

 stem passes. 



Oct- or Octo- (Gr. OKTU, oTcto, eight). 

 A prefix in compound words imply- 

 ing eight. 



Oc'tagon (Gr. OKTU, olcto, eight ; 

 yuvia, gunia, an angle). A figure 

 having eight angles. 



Octagyn'ia (Gr. OKTU, oTcto, eight ; 

 JWTJ, gune, a female). An order 

 of plants in the Linnean system, 

 having eight pistils. 



Octahed'ron (Gr. OKTU, okto, eight ; 

 f5pa, hed'ra, a base). A solid 

 figure bounded by eight equal sides, 

 each of which is an equilateral 

 triangle. 



Octan'dria (Gr. OKTU, okto, eight ; 

 avrjp, aner, a man). A class of 

 plants in the Linnean system having 

 eight stamens. 



Octan'gular (Lat. octo, eight ; arigu- 

 lus, an angle). Having eight an- 

 gles. 



Oc'tant (Lat. octo, eight). The 

 eighth part of a circle ; the aspect 

 of two planets in which they are 

 distant from each other the eighth 

 part of a circle, or forty-five de- 



Oc'tastyle (Gr. OKTU, okto, eight ; 

 (TTV\OS, stulos, a pillar). A build- 

 ing having eight columns in front. 



Oc'tave (Lat. octa'vus, the eighth). 

 In music, a collection of eight con- 

 secutive notes, of which the eighth 

 (or highest) is produced bv twice 

 the number of vibrations which 

 form the first or lowest. 



Oc'topod (Gr. OKTU, okto, eight ; TTOVS, 

 pous, a foot). An animal having 

 eight feet or legs ; a tribe of cepha- 

 lopods so called. 



Oc'ular (Lat. oc'ulus, an eye). Re- 

 lating to the eyes. 



Oc'uliform (Lat. oc'ulus, an eye; 

 forma, form). Having the form 

 of an eye. 



Oc'ulist (Lat. oc'ulus, an eye). A 

 person who treats disorders of the 

 eyes. 



-Ode or -Odes (Gr. ufys, odes). _ A 

 termination generally denoting 

 abundance of that substance which 

 is implied by the previous part of 

 the word. 



Ode'um (Gr. wSeioj/, odeion; from 

 5i7, ode, a song). A small theatre 

 for the recitation of musical com- 

 positions. 



