labelling

is likely misspelled.

has no English definition.

As a verb labelling

is present participle of lang=en.

As a noun labelling

is alternative form of lang=en.

As verbs the difference between labelling and libelling

is that labelling is present participle of lang=en while libelling is present participle of libel.

As a noun labelling

is alternative form of lang=en.

As a verb labelling

is present participle of lang=en.

As a noun labelling

is alternative form of lang=en.

As an adjective bioorthogonal is

describing biochemical research techniques for selectively labelling biomolecules that are independent of the detailed structure of the host molecule.