1. Able to be measured using a common standard
    A yard and a foot are commensurable, as both may be measured by inches.
  2. Related in size or scale; commensurate or proportionate
  3. (of two numbers) Exactly divisible by the same number an integer number of times WP
    The numbers 12 and 18 are commensurable, as both are divisible by 6, while 12 and 19 are incommensurable.

The above text is a snippet from Wiktionary: commensurable
and as such is available under the Creative Commons Attribution/Share-Alike License.

Need help with a clue?
Try your search in the crossword dictionary!