As nouns the difference between purine and polypurine

is that purine is (organic compound) any of a class of organic heterocyclic compounds composed of fused pyrimidine and imidazole rings that comprise one of the two groups of organic nitrogenous bases (the other being the pyrimidines) and are components of nucleic acids while polypurine is (biochemistry) a continuous sequence of purines in a protein.

As nouns the difference between protein and polypurine

is that protein is protein while polypurine is (biochemistry) a continuous sequence of purines in a protein.

Polypurinic is a derived term of polypurine.

As a noun polypurine is

(biochemistry) a continuous sequence of purines in a protein.

Photoisomerize is a alternative form of photoisomerise.

Photoisomerise is often a misspelling of photoisomerize.

Photoisomerise has no English definition.

As a verb photoisomerize is

to cause a structural change between isomers through photoexcitation.

As a noun isomer

is isomer.

As a verb photoisomerize is

(chemistry) to cause a structural change between isomers through photoexcitation.

In chemistry terms the difference between photoexcitation and photoisomerize

is that photoexcitation is the formation of an excited state by the absorption of a photon while photoisomerize is to cause a structural change between isomers through photoexcitation.

As a noun photoexcitation

is the formation of an excited state by the absorption of a photon.

As a verb photoisomerize is

to cause a structural change between isomers through photoexcitation.

Photoisomerization is a derived term of photoisomerize.

In chemistry|lang=en terms the difference between photoisomerization and photoisomerize

is that photoisomerization is (chemistry) the formation of isomers via photoexcitation while photoisomerize is (chemistry) to cause a structural change between isomers through photoexcitation.

As a noun photoisomerization

is (chemistry) the formation of isomers via photoexcitation.

As a verb photoisomerize is

(chemistry) to cause a structural change between isomers through photoexcitation.

Nonperiodic is a derived term of nonperiodicity.

Nonperiodicity is often a misspelling of nonperiodic.

Nonperiodicity has no English definition.

As an adjective nonperiodic is

not periodic; lacking a regular cycle; irregular.

As adjectives the difference between radiate and nonradiate

is that radiate is radiating from a center; having rays or parts diverging from a center; radiated while nonradiate is not radiate; lacking a radial arrangement.

As a verb radiate

is to extend, send or spread out from a center like radii.

As a noun radiate

is (zoology) one of the radiata.

As adjectives the difference between radial and nonradiate

is that radial is arranged like rays that radiate from, or converge to a common centre while nonradiate is not radiate; lacking a radial arrangement.

As a noun radial

is a radial tire / radial tyre.