PRONOUNCING - INDEX - GLOSSARY 



TABLE OF PREFIXES AND SUFFIXES 

 (To be Memorized) 



The object of this Index-Glossary is not to furnish a detailed expla- 

 nation. This must be sought in the text on the page assigned. The 

 object is to give the student such knowledge of the technical words used 

 in Biology as will enable him to take apart the words he finds in his 

 scientific reading and analyze them. Therefore, he must learn all of the 

 immediately following prefixes and suffixes: 



A or an (G. prefix, without) e.g. apoda, 

 i.e. without feet. 



Ab (L. prefix, away from) e.g. aboral 

 i.e. away from the mouth. 



Ad (L. prefix, toward, upon) e.g. adrenal 

 i.e. upon the renal gland. 



ae plural-ending for Latin sigular nouns 

 ending in A. 



Ambi (L. prefix, both) e.g. ambidextrous, 

 i.e. ability to use both hands. 



Amphi (G. prefix, on both sides) e.g. am- 

 phibia, i.e. to live on land and in 

 water. 



Ante (L. prefix, before in place or time) 

 e.g. antebrachium, i.e. placed before 

 the arm. 



Anti (G. prefix, opposite, or opposed to) 

 e.g. antitoxin, i.e. opposing or neu- 

 tralizing a toxin. 



Arch (G. prefix, chief or early) e.g. arch- 

 enteron, i.e. the earliest enteron or 

 digestive tract. 



Auto (G. prefix, self) e.g. auto-intoxica- 

 tion, i.e. poisoning produced within 

 one's own body. 



Bi (L. prefix, double) e.g. bilateral, i.e. 

 same on both sides. 



Blast (G. either prefix or suffix, a sprout, 

 or bud), e.g. blastoderm, and neuro- 

 blast, i.e. a primitive germ-layer and 

 a. primitive nerve cell. 



Brevis (L. short) e.g. adductor brevis, 

 i.e. the short adductor. 



Caudad (L. tail) used only in an ad- 

 verbial sense, as growing caudad, i.e. 

 tailwcrd, or toward the tail. 



Cephalad (G. head) used only in an ad- 

 verbial sense, as growing toward the 



head. 

 Chondro (G. gristle or cartilage) e.g. 



chondrocranium, i.e. that part of the 



cranium developing from cartilage. 

 Circum (L. prefix, round-about) e.g. cir- 



cumoesophageal, i.e. running around 



the oesophagus. 

 Cleido (L. clavicle — key) e.g. sterno- 



eleido mastoid muscle, i.e. the muscle 



attached to the sternum, clavicle and 



mastoid bones. 

 De (L. prefix, off) e.g. degenerate, i.e. to 



become inferior — to lose generative 



ability. 

 Di (G. prefix, twice) e.g. diploblastic, i.e. 



to remain in the two-germ-layer state. 

 Dorsad (L. back) used only in an ad- 

 verbial sense, as toward the back. 

 Ecto (G. prefix, outside) e.g. ectoderm, 



i.e. the germ-layer lying toward the 



outside. 

 En (G. prefix, within), e.g. encephalon, i.e. 



brain — within the cephalon or head. 

 Endo (G. prefix, within), e.g. endoderm, 



i.e. the germ-layer lying toward the 



inside. 

 Ento — Same as Endo. 

 Epi (G. prefix, upon) e.g. epinephros, i.e. 



same as adrenal, namely, lying upon 



the nephridic organ. 

 Ex (G. prefix, without or outside) e.g. 



exoskeleton, i.e. having a skeleton on 



the outside. 



