infusible
adjective
in·fus·ible (ˌ)in-ˈfyü-zə-bəl 
: incapable of being fused : very difficult to fuse
infusibility
(ˌ)in-ˌfyü-zə-ˈbi-lə-tē
noun infusibleness
(ˌ)in-ˈfyü-zə-bəl-nəs
noun 
Example Sentences
Recent Examples on the Web The Explore 3 cuts twice as fast as the previous Explore machines and can cut more than 100 materials including cardstock, vinyl, poster board, and infusible ink. 
Emily Vanschmus, Better Homes & Gardens, 25 May 2021 Then, choose a color of infusible ink ($5, Amazon) and use a regular Cricut cutting machine to cut out your custom design. Emily Vanschmus, Better Homes & Gardens, 18 May 2021 Cricut has a new infusible ink system that Michaels will sell exclusively through Oct. 1. Maria Halkias, Dallas News, 21 June 2019
Emily Vanschmus, Better Homes & Gardens, 25 May 2021 Then, choose a color of infusible ink ($5, Amazon) and use a regular Cricut cutting machine to cut out your custom design. Emily Vanschmus, Better Homes & Gardens, 18 May 2021 Cricut has a new infusible ink system that Michaels will sell exclusively through Oct. 1. Maria Halkias, Dallas News, 21 June 2019 Word History
Etymology
in- entry 1 + fusible
First Known Use
1555, in the meaning defined above