A compass of delicate construction, used in observations on the variations of the needle.

plural of antigenic variation

plural of equivalent variation

plural of magnetic variation

plural of variation compass

plural of elegant variation

(genetics) The variation of the number of copies (normally two) of a gene, or of sequences of DNA, in the genome of a specific individual; has been linked to some diseases

plural of copy number variation

In a variational manner. / With regard to variation.

(linguistics) A person who studies variation in usage among speakers of the same language