Lead-in for gram

• Decimal starter
• Word form of "six"
• One less than septi-
• Gram or decimal starter
• "Six" prefix
• Half dodeca-
• Six: Prefix
• Half of dodeca-

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Hex- \Hex-\, Hexa \Hex"a\ [Gr. "e`x six. See Six .] A prefix or combining form, used to denote six, sixth, etc.; as, hexatomic, hexabasic.