semifluid

adjective

1. imperfectly fluid; having both fluid and solid characteristics; semiliquid.

noun

2. a semifluid substance.

adjective Also: semifluidic (ˌsɛmɪfluːˈɪdɪk)

1. having properties between those of a liquid and those of a solid

noun

2. a substance that has such properties because of high viscositytar is a semifluid