deca=10
decahedron, a polygon having ten faces

decapod.

nona=9
nonagon
nonagenarian

hept=7
heptagon
heptathalon
heptane

tetra=-four

 

 

tet·ra·bran·chi·ate

belonging or pertaining to the Nautiloidea (Tetrabranchiata), a subclass or order of cephalopods with four gills, including the pearly nautilus and numerous fossil forms.

Tetragonopterus

 

tripod
triangle
trigonometry
triple
triphasic
tri=three

di=two

1. Two; twice; double: dichromatic.

2. Containing two atoms, radicals, or groups: dichloride.

 

 

mono=one
monorchis    

A person or animal with only one testicle.         

monorchism

The condition of having only one testicle.

monorheme, monorhemic

A single element or word with a phrasal meaning.

monorhinal

monorhine, monorhinic

1. Having a single nasal passage, instead of the usual two; such as, lampreys (freshwater jawless fish with a round sucking mouth for attaching itself to other fish and, in the case of adults, feeding parasitically on their blood).