en groupe de douze

listen to the pronunciation of en groupe de douze
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{a} duodecimal
Of a number, expressed in duodecimal
Proceeding in computation by twelves; expressed in the scale of twelves
The system is used chiefly by artificers in computing the superficial and solid contents of their work
A number system that uses 12 as its base
{s} based on twelve (about a numeral system)
A system of numbers, whose denominations rise in a scale of twelves, as of feet and inches
based on twelve; "the duodecimal number system
A twelfth part; as, the duodecimals of an inch