An example of interpose is to start a new topic of conversation.
Interpose one's veto.
To interpose a screen between the eye and the light.
Origin of interpose
- French from Old French interposer to intervene alteration (influenced by poser to put, place) of Latin interpōnere to put between inter- inter- pōnere to put apo- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition