pseudoplastic
/ˌs(j)uːdə(ʊ)ˈplastɪk/adjective
1Almost plastic; spuriously plastic.
2 Science. Of a liquid or its behaviour: non-Newtonian, especially in having a viscosity that decreases with increasing shearing stress.
noun
Science. A pseudoplastic liquid.
Origin
Mid 19th century. From pseudo- + plastic, in sense A. 1 originally after German pseudoplastisch.