Definition of myxomycetous in US English:

myxomycetous

adjective

Biology
  • Of or belonging to the taxon Myxomycetes of slime moulds; of, relating to, or of the nature of a myxomycete.

Origin

Late 19th century; earliest use found in Philosophical Transactions of the Royal Society of London. From myxomycet- + -ous.

Pronunciation

myxomycetous

/ˌmɪksə(ʊ)mʌɪˈsiːtəs/