Definition of movable-do in US English:

movable-do

(British movable-doh)

adjective

  • attributive Denoting a system of solmization (such as tonic sol-fa) in which do is the keynote of any major scale.

    Compare with fixed-do
    • ‘Those of us who have been taught with a movable doh find fixed doh very hard.’
    • ‘As a choirboy I was taught the movable doh system as well as staff notation.’
    • ‘The guitar is well equipped to adapt to solfa: the finger patterns easily relate to the movable doh.’

Pronunciation

movable-do

/ˌmo͞ovəbəlˈdō/