Is “Complementation” a Scrabble word?
Yes
COMPLEMENTATION
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 Complementation
noun
1.The replacement of a set by its complement
2.The interaction between two genetic units such that an organism can function normally if either one is defective
3.(grammar) The relationship of a phrase to its predicate