The numbers 6 and 9 are commensurable since they are divisible by 3.
2.
suitable in measure; proportionate.
Origin
1550-60; < Late Latincommēnsūrābilis, equivalent to Latincom-com- + mēnsūrābilis (equivalent to mēnsūrā(re) (see commensurate) + -bilis-ble)
Related forms
commensurability, commensurableness, noun
commensurably, adverb
British Dictionary definitions for commensurable
commensurable
/kəˈmɛnsərəbəl; -ʃə-/
adjective
1.
(maths)
having a common factor
having units of the same dimensions and being related by whole numbers: hours and minutes are commensurable
2.
well-proportioned; proportionate
Derived Forms
commensurability, noun commensurably, adverb
Word Origin and History for commensurable
adj.
1550s, from Late Latin commensurabilis "having a common measure," from com- "together with" (see com-) + Latin mensurabilis "that can be measured," from mensurare "to measure," from mensura "measure" (see measure (v.)).