IPA: /rɪˈfræktɪvnəs/
KK: /rɪˈfræktɪvnəs/
The quality or state of bending light as it passes through different materials.
The refractiveness of the glass allowed for beautiful light patterns in the room.
Refractiveness → It is formed from "re-" (meaning again) and "frangere" (meaning to break) combined with the suffix "-ness" (indicating a state or quality). The word refers to the quality of bending or breaking light again as it passes through different mediums.
Think of light 'breaking' ('frangere') 'again' ('re-') as it passes through different materials, which helps you remember that 'refractiveness' describes the quality of bending light.