ORG- 



218 



ORO- 



organ (dr'gan) n. [Gk. organon, an 

 implement.] Any part or structure 

 of an organism adapted for a 

 special purpose (biol.}. 



organ of Corti, see Corti's organ. 



organellae (dr'g&nei'e) n. plu. [Gk. 

 organon, an instrument.] The 

 various parts of a cell (cyt.). 



organic (organ'ik) a. [Gk. organon, 

 an instrument] Pert., derived 

 from, or showing the peculiarities 

 of a living organism (biol.}. 



organiflc (o/ganTfik) a. [Gk. or- 

 ganon, instrument ; L. facers, to 

 make.] Producing an organism ; 

 making an organized structure 

 (biol.). 



organism (dr'gamzm) n. [Gk. or- 

 ganon, instrument.] Any living 

 animal or plant ; anything capable 

 of carrying on the processes of life 



organized (6r'ganTzd) a. [Gk. organon, 

 instrument.] Exhibiting the char- 

 acteristics of, or behaving like an 

 organism (biol.}. 



organogen (organ'qjSn) n. [Gk. 

 organon, instrument ; genos, off- 

 spring.] Any of the four elements 

 C., H., O., N. (phys.). 



organogenesis (6rgan'6j6n'Ssis) n. 

 [Gk. organon, instrument ; genesis, 

 descent.] The formation and de- 

 velopment of organs (biol.}. 



organography (&r'ganog / rafi) n. 

 [Gk. organon, instrument ; graphein, 

 to write.] The description of the 

 organs in any living organism 

 (biol.}. 



organoleptic (6i / gan6l6p'tik) a. [Gk. 

 organon, instrument ; lambanein, to 

 take hold of.] Capable of being 

 impressed, or of making an im- 

 pression (phys.}. 



organonomy (or'ganon'oml) n. [Gk. 

 organon, instrument ; nomos, law.] 

 The laws that deal with life or 

 living organisms (biol.}. 



organonymy (6r'ganon'imT) n. [Gk. 

 organon, instrument ; onyma, name.] 

 The nomenclature of organs (bwl.~). 



organophyly (6r'ganof'ili) n. [Gk. 

 organon, instrument ; phylon, a 

 tribe.] The phylogeny of organs 



nourish.] Pert, the formation and 

 nourishment of organs (bwl.~). 



organule (oYganul) n. [Gk. organon, 

 instrument] Any of the cells or 

 elements of an organism (biol.~). 



orgasm (or'gazm) n. [Gk. organ, to 

 swell.] Any immoderate excite- 

 ment ; turgescence of any organism 



orientation (6'rienta'shun) n. [L. 

 oriens, rising.] The alteration in 

 position shown by various proto- 

 plasmic bodies in the cell under 

 various stimuli (phys.\ 



orifice (Sr'ifis) n. [L. os, mouth ; 

 facere, to make.] A mouth or 

 aperture ; the opening of a tube, 

 duct, etc. 



original (drij'inal) a. [L. origo, 

 origin.] Pert, the beginning ; 

 appl. the wild species from which 

 the cultivated have been derived 



ornis (6r'nis) n. [Gk. ornis, a bird.] 

 The bird fauna of a region (zool.\ 



ornithic (ornith'ik) a. [Gk. amis, a 

 bird.] Pert. Birds (pal^. 



ornithichnite (or'mthik'nlt) n. [Gk. 

 ornis, bird ; ichnos, a tract.] The 

 fossil track or foot-prints of a Bird 



ornithlne (dr'nithin) n. [Gk. ornis, 

 bird.] An organic substance found 

 in the excreta of Birds (phys.}. 



ornithocopros (or'nithokop'ros) . 

 [Gk. ornis, bird ; kopros, dung.] 

 The dung of Birds. 



Ornithogaea (6r / nlthoje'a) n. [Gk. 

 ornis, bird ; gaia, land.] The zoo- 

 raphical region which includes 

 ew Zealand (zool.}. 



gr 

 N 



organotrophic (or'ganotrof'ik) a. [Gk. 

 organon, instrument ; trephein, to 



ornithology (or'nithol'ojl) n. [Gk. 

 ornis, bird ; logos, discourse.] The 

 branch of Zoology dealing with 

 Birds. 



ornithophilous (or'nithof'ilus) a. [Gk. 

 ornis, bird ; philein,-\.Q love.] Bird- 

 loving ; appl. flowers that are 

 pollinated through the agency of 

 Birds (bot.}._ 



oroanal (o'roa'nal) a. [L. os, mouth ; 

 anus, anus.] Serving as mouth 

 and anus (zool.~). 



oronasal (o'rona'zal) a. [L. os, 

 mouth ; nasus, nose.] Pert, or 

 designating the groove that con- 

 nects the mouth and nose (zooL\ 



