Itanium

Proper Noun Full Form An Intel microprocessor that uses explicitly parallel instruction set computing and 64-bit memory addressing. ""Itanium-based"" refers to systems or platforms that are based on the Itanium processor. ""Itanium2-based"" refers to systems or platforms that are based on the Itanium2 processor. ""Itanium architecture-based"" refers to systems or platforms that are based on the Itanium and Itanium2 processors.