diaryl

As a noun diaryl

is (uncountable|organic chemistry|especially in combination) two aryl groups in a compound.

As an adjective undefined is

lacking a definition or value.

As nouns the difference between diaryl and diary

is that diaryl is (uncountable|organic chemistry|especially in combination) two aryl groups in a compound while diary is a daily log of experiences, especially those of the writer.

As an adjective diary is

(obsolete) lasting for one day.

As nouns the difference between biaryl and diaryl

is that biaryl is any compound containing a substructure that is an assembly of two aromatic rings or aryl groups, if joined by a single bond while diaryl is two aryl groups in a compound.

As an adjective biaryl

is of or pertaining to a compound containing an assembly or substructure of two aromatic rings or aryl groups, if joined by a single bond.

In uncountable organic chemistry especially in combination terms the difference between diacyl and diaryl

is that diacyl is two acyl groups in a compound while diaryl is two aryl groups in a compound.

As nouns the difference between diaryl and diarylmaleimide

is that diaryl is (uncountable|organic chemistry|especially in combination) two aryl groups in a compound while diarylmaleimide is (organic chemistry) any diaryl derivative of maleimide.

As nouns the difference between diaryl and diaryliodonium

is that diaryl is (uncountable|organic chemistry|especially in combination) two aryl groups in a compound while diaryliodonium is (organic chemistry|especially in combination) any diaryl derivative of an iodonium ion.