Is “Rhizome” a Scrabble word?
Yes
RHIZOME
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Rhizome
/ˈɹaɪzoʊm/
noun
1.A horizontal, underground stem of some plants that sends out roots and shoots from its nodes.
2.A so-called "image of thought" that apprehends multiplicities. See Rhizome (philosophy).